Hi Hon,
I'm sorry this has happened to you. I take 900 mg a day, 300 morning, and 600 nite. It made me very sleepy at first, but after a few days it was easier. I have found that my 300 in the am makes me sleepy. Always take a late morning nap. the 600 at nite doesn't seem to make me sleepy at all. Maybe you could take 600 at nite and see if it works. Hang in there, and take it easy. We are here for you.
very gentle hugs and pats.
mary