As a longtime chronic insomniac: don't screw around and take your sleep for granted. It sounds like you are seriously sleep-depriving yourself. Take it as seriously as proper exercise and nutrition. If you make apps, your mind being sharp is critical. An athlete wouldn't pig out on junk food and avoid exercise would they?

I'm following a series of exercise videos, which I try to do first thing after arriving home from work in the evening. Find a routine that suits you. Don't feel guilty if Random Joe Blogger's routine doesn't suit your situation. If you are blessed with great sleep: seize it with both hands!