I don't think the 30 degree change is going to make that much of a difference. I would just work on getting there. Also, i have found that the WBTB (wake back to bed) method is great for achieving results. Although, you said you don't get much sleep this could be difficult because you would be in your deep sleep most of the night. Read some tutorials on the WBTB and start seeing incredible results.

I've went straight into a lucid dream once during WBTB method. It has to be because your mind is aware that you are about to dream. Good Luck.