diff --git a/shared-modules/mid-specialism-project/backend/weekly-plan.md b/shared-modules/mid-specialism-project/backend/weekly-plan.md
index 9651e5fc..0bedd9d3 100644
--- a/shared-modules/mid-specialism-project/backend/weekly-plan.md
+++ b/shared-modules/mid-specialism-project/backend/weekly-plan.md
@@ -1,25 +1,194 @@
-# Weekly plan
+# Weekly Plan – Backend Project
 
-Here is a guideilne of the outcomes you should reach each week to stay on track.
+This document outlines the expected weekly progress and milestones for completing the backend project.
+The structure aligns with the Product Requirements Document (PRD), Shared API Contract, and Technical Specification.
 
-<!-- Guide for writing these:
-These weekly goals need to ensure two things:
-1. What trainees learn from the corresponding week in [database](/courses/backend/databases/README.md) and [node](/courses/backend/node/README.md) modules are practiced here in the right place
-2. All requirements/deliverables from the [project](../README.md) are well structured and ordered to ensure trainees can reach the end goals by week 5.
+The goal is to progressively implement a fully functional, contract-compliant API with proper documentation, testing, and deployment.
 
-For some context on how we ordered the milestones in the old meal sharing project, check [here](https://github.com/HackYourFuture-CPH/program/blob/main/contributing/proposals/mid-specialism-course-project.md#old-meal-sharing-content). Note that we have changed the structure of the corresponding modules too, but there is a big overlap in learning goals.
- -->
+---
 
-## Week 1 Sprint
+## Week 1 Sprint – Core Data Modeling (DB week 1)
 
-- [ ] (e.g. start with some planning tasks)
+### Week 1 Goal
 
-## Week 2 Sprint
+Design and implement the foundational database schema for users and catalog entities.
 
-## Week 3 Sprint
+### Week 1 Tasks
 
-## Week 4 Sprint
+- [ ] Review the Product Requirements Document (PRD)
+- [ ] Design ERD (v1) including:
+  - `user`
+  - `{domain}_item` (e.g. `event`)
+- [ ] Implement PostgreSQL schema with:
+  - Primary keys
+  - Foreign keys (where applicable)
+  - Proper constraints
+- [ ] Add seed data for:
+  - At least 1 test user
+  - Multiple catalog items
+- [ ] Implement and test basic SQL queries:
+  - Get all items
+  - Get item by ID
+- [ ] Document ERD in the repository
 
-## Week 5 Sprint
+### Week 1 Outcome
 
-- [ ] (e.g. end with some deploying tasks)
+- Working PostgreSQL database
+- ERD v1 committed
+- Seeded data available
+- Catalog data queryable directly via SQL
+
+---
+
+## Week 2 Sprint – Complete Database Structure (DB week 2)
+
+### Week 2 Goal
+
+Finalize database structure to support cart, checkout, and order flows.
+
+### Week 2 Tasks
+
+- [ ] Extend ERD to include:
+  - `cart`
+  - `cart_item`
+  - `order`
+  - `order_item`
+- [ ] Implement all foreign key relationships
+- [ ] Enforce “one active cart per user” rule
+- [ ] Implement SQL queries for:
+  - Paginated item listing (`LIMIT`, sorting)
+  - Cart subtotal calculation
+  - Order totals snapshot logic
+- [ ] Update ERD (v2)
+- [ ] Add seed updates if needed
+
+### Week 2 Outcome
+
+- Complete database schema supporting full PRD flow
+- ERD v2 finalized
+- Cart and order data structures functional at SQL level
+
+---
+
+## Week 3 Sprint – Public API (NODE week 1: GET Only)
+
+### Week 3 Goal
+
+Expose public catalog endpoints and implement initial API documentation.
+
+### Week 3 Tasks
+
+- [ ] Set up Express application structure
+- [ ] Connect application to PostgreSQL
+- [ ] Implement public endpoints:
+  - `GET /api/{domain}` (paginated)
+  - `GET /api/{domain}/search`
+  - `GET /api/{domain}/{id}`
+- [ ] Implement pagination response format:
+
+```json
+{
+  "data": [],
+  "meta": {
+    "page": 1,
+    "pageSize": 20,
+    "totalItems": 245,
+    "totalPages": 13
+  }
+}
+```
+
+- [ ] Implement standardized error format
+- [ ] Add Swagger/OpenAPI documentation for public endpoints
+- [ ] Start Postman collection (public endpoints)
+
+### Week 3 Outcome
+
+- Public catalog API functional
+- Pagination working
+- API documented via Swagger
+- Postman collection includes public routes
+
+---
+
+## Week 4 Sprint – Authentication & Cart (NODE week 2: POST + Middleware)
+
+### Week 4 Goal
+
+Implement authentication and protected cart functionality.
+
+### Week 4 Tasks
+
+- [ ] Implement authentication endpoints:
+  - `POST /api/auth/signup`
+  - `POST /api/auth/login`
+  - `GET /api/auth/me`
+- [ ] Implement JWT-based authentication middleware
+- [ ] Protect private endpoints
+- [ ] Implement cart endpoints:
+  - `GET /api/cart`
+  - `POST /api/cart/items`
+  - `PUT /api/cart/items/{itemId}`
+- [ ] Validate request payloads
+- [ ] Ensure consistent error responses
+- [ ] Update Swagger documentation
+- [ ] Extend Postman collection with auth + cart flows
+
+### Week 4 Outcome
+
+- JWT authentication functional
+- Protected routes working
+- Cart can be created and modified
+- Documentation updated
+
+---
+
+## Week 5 Sprint – Checkout, Orders & Deployment (NODE week 3: PUT/DELETE + Transactions)
+
+### Week 5 Goal
+
+Complete private API, implement checkout transaction, and deploy.
+
+### Week 5 Tasks
+
+- [ ] Implement remaining cart endpoints:
+  - `DELETE /api/cart/items/{itemId}`
+  - `POST /api/cart/checkout` (transactional)
+- [ ] Implement order endpoints:
+  - `GET /api/orders`
+  - `GET /api/orders/{orderId}`
+- [ ] Implement database transaction for:
+  - Converting active cart → order
+  - Creating order items
+  - Clearing/replacing active cart
+- [ ] Finalize error handling across all routes
+- [ ] Complete Swagger documentation
+- [ ] Finalize Postman collection
+- [ ] Deploy:
+  - Database
+  - API service
+  - Swagger documentation
+
+### Week 5 Outcome
+
+- Fully functional contract-compliant backend
+- Checkout flow transactional and stable
+- Orders history available
+- Swagger/OpenAPI docs accurately reflect the implemented API
+- API + DB deployed
+- Postman collection complete
+
+---
+
+## Final Deliverables
+
+By the end of Week 5, you must provide:
+
+- [ ] GitHub repository
+- [ ] ERD documentation
+- [ ] Deployed PostgreSQL database
+- [ ] Deployed API service (including working Swagger UI from the provided skeleton)
+- [ ] Swagger/OpenAPI documentation updated to match your implementation
+- [ ] Postman collection covering core flows
+
+---