I'm done with excuses (It's been 1 year I've been introduced to TheRedPill) and I started lifting just one week ago.I have severe asthma which doesn't let me push the limits. Maximum I can do 2 sets of each exercise.I eat well. I don't eat junk food AT ALL. The only drug I constantly use is caffeine.

The problem is.. I don't think I'm getting enough sleep. I'm a freelance translator and I work until 1-2 AM. My question is, how much sleep is enough? Will 6-7 hours do the trick?
Edit: Any good posts on TRP for lifting?