Try to "wean" yourself off of needing sweets at night. When I dieted for my last show, I thought I was going to die if I didn't get some m&m's in me in a hurry. After a while of not having them, I got to where my body just didn't crave them anymore. I know it sux in the beginning, but it is well worth it. I'm not even dieting now and I still don't eat stuff like that, just because I don't crave it anymore.