I am also trying same, I have been advised for say minimum 2-3 weeks sleep early and have a very light Dinner. When you less your body will try to wake you up due to hunger.
:TH:
But if your hungry then how are u meant to concentate on paath and simran? I've heard u are not meant to eat after your nitnem
You can eat after, but not before!!!! If you are amritdhari, you shouldnt eat before completing your nitnem, if you do, rehitnamas vary.. but the basics are your a greedy something..
Hunger doesn't make u greedy. Hunger is a natural call or signal that ur body need something to survive.