Going to bed at 3am , HELP!

[bjcheung77]

This is very common. Nothing to worry about actually. You know, it's hard to just switch and change your ways immediately.
I would work in setting your time management and slowly adapt to the times you want to set up/plan to have for the day.
Sometimes studying/working these hours is like working a p/t graveyard job, it takes getting used to...
Just like when you change back to a 9-5. Get a calendar/schedule and place/set your times accordingly.