I always use the time after meals to clean when I'd be washing up the dishes anyway. Even a quick run around the house making sure everythings tidy, put the washing on, wipe down surfaces etc keeps things maintained then I can use an hour at the weekend for a deep clean
I clean regularly throughout the day. This makes me break away from my work in front of the computer. I get done more in cleaning and chores.
I do my first round of studying for 45 minutes and then clean for about 10 minutes as a break. Any other breaks are just a quick stretch or walk around my room.