Word Notes Client Organization

I have a single, lengthy Word document packed with raw company notes. I need it turned into a clean, easy-to-navigate file arranged by client or project. Within each section I want every note dated, any contacts clearly listed, and all follow-up tasks highlighted so nothing slips through the cracks... (Budget: ₹12500 - ₹37500 INR, Jobs: Data Entry, Editing, Microsoft Office, PDF, Report Writing, Technical Writing, Word, Word Processing)