Fair play. I RP to practice my writing skills, if I'm honest. I don't need to 'escape'.
But that's exactly the problem! It's Catch-22 - You RP go escape the problems of real life, but struggle to do so because of those exact problems. You need to RP to escape lives issues but those same issues stop you RPing
Also, sleep is very important. I used to stay up until midnight and beyond trying to make a post. The result? Someone who was grouchy, unfocussed and unable to work effectively. I mean in terms of both RP and IRL. Don't skimp on sleep, especially just to hammer a post out.
Also, take a break every so often, just to do nothing. Don't write or draw or anything else. Just relax for five minutes. Trust me, it helps. That's probably more effective with the assignments than anything else, but it might work for everything else.
It sounds hypocritical of me to say RP less when I was complaining about lack of haste, I know. Is there not something - anything - else that has the same effect? Something that isn't subject to the volatile nature of your (or others) timetable(s)? Read a book or play a game or smoke some weed?
I'm kidding about the weed. Don't actually do that.