Succession sowing/planting?

I have a large excel spreadsheet with all my crops listed down the left and the weeks along the top, I then fill in what needs to be sown each week and how (direct sown, modules under heat, modules outside, seed trays ....). On a Sunday I scribble down a list of everything that needs sowing that week as part of my To Do list.

I like spreadsheets, lists, control and order in my planning, a total contrast to my garden which is full of weeds (wildflowers), over grown plants and random scruffy areas!