I did not mean to imply that 3mg could not be taken, Syl. I was simply stating that for me 2mg worked just fine. Why take more than you need? If you find 2mg does not work then up it to 3mg.
As far as what time to take it, that may be trial and error for this person, since everyone is different. I tried it for one half hour before bed and I needed more time. Not everyone is the same. And at that time I was taking (2) 2 mg. and it still took me more time.