Splitting a task into ten-minute blocks sounds manageable until each session ends halfway through understanding the problem. Some work needs a longer stretch to become useful.
Look for natural boundaries. You might gather the source material in one session, outline the argument in another and draft a complete section later. Each piece should produce something the next session can use.
Include the restart
Leave a short note about what you finished, what is unresolved and where to begin again. Keep the relevant files together. Otherwise the next block may be spent rebuilding the context you had just before stopping.
When a piece consistently takes longer than the time available, either narrow it or find a more suitable window. You can also use a short gap for preparation and save drafting for a longer session. After finishing the task, notice which boundaries were useful. Those are better guides for your next plan than dividing every project into equal pieces regardless of what the work involves.
