Sleep. Drugs or Bike - pick two...

Seems I have a bit of a dilemma - if I take lots of drugs at night, I sleep well, but my bike-riding abilities are diminished. If I ease off on the drugs, I don't sleep as well but I can ride the bike better (ie: single track poses less of a problem). I use my bike riding ability as a good gauge of progress ... the better I manage on single-track, and the more comfortable I am in riding with one hand, the better I'm doing. I'm surprised at the improvements I've made despite lack of good quality sleep ... I can only imagine that it could be even better with sufficient rest. I also noticed that, when I do get a good nights sleep (like last night), my attitude about life is improved as well (I find that if I'm tired, I'm also depressed). This stroke thing has definitely been the biggest struggle I've ever faced. I can only hope that I continue to improve...