Hi, yes I have the same problem! I do not get sleepy untill 01.00
What I do now is take 0.5 mg of melatonin at 19.30 en than I get a little bit sleepy at 21.30 and rush to bed. I set an alarm to take the meda and it works for me! Good look, I hope this will be helpfull for you. (Excuse my english, it is not my native laguage)