Ten minutes
Ten minutes is enough for a sit. Open a Beginner or Easy board. Find a few forced marks. Stop if the time is up.
You do not have to finish. Continue on Home will hold an unfinished puzzle. Solved only wants a finished one.
A short sit is not a lesser sit. It is the same hobby in a smaller window. Binary Puzzle on 6×6 and a gentle Sudoku both fit. Star Battle on 6×6 Beginner does too.
If you only have ten minutes most days, that is a good rhythm. The site does not turn that into a chore list.