Just started generic lamictal. Took for two weeks on 25mg. Took it in the evening. I had trouble sleeping at night and felt it did not make me tired. Switched to morning with my Zoloft and Doc upped it to 50 mg and told her I take in the morning. So now, I am so tired I can't stay awake. Will this side effect wear off? Or should I switch back to evening time to take?