Hi Daisy and welcome. Some are more attuned to meds than others, so you may want to go back down for awhile.
Lady, I don't think it matters when you go to sleep. I think the endorphin mechanism takes place in the wee hrs of the morn, anyway.
LarryLDN took his at around midnight, 3mg, and then worked the late shift and it sure worked for him. I take mine, 4.5 mg, around midnight and sometimes don't fall asleep 'till 2 or 3 am. The important thing is to try and take it at the same time every night, before 2am.