Hi!
Here are some tips that could help you :
- waking up EVERYDAY at the same time, and not wake one or two hours later on weekends;
- not sleeping too much, 7 or 8 hours is good but it depends on you, sleep the amount of time that you need to be fit and still be able to sleep at night;
- having a "sleeping routine", doing the same everyday, before bed.
Hope I helped you!