I can totally understand you! I go to school full-time, work part-time, and I have a ton of student activities. I don't get home until the wee hours of the morning, but Beau just snuggles up next to me while I do my homework or if he's hyper, I'll take him for a walk around the block inbetween subjects so we both get a little break.
If he wants to play, I throw his stuft cat inbetween math problems, so my homework takes a little longer than usual but atleast I'm paying attention to Beau at the same time!!