I have been on generic Wellbutrin SR 150mg twice per day for a to...

I have been on generic Wellbutrin SR 150mg twice per day for a total of four days now. I am tapering off of 100mg of generic Zoloft daily by cutting it to 50mg daily for four days. My mood, outlook, attitude, and performance at work has improved 100%. The only side effect I am having trouble with is a very difficult time falling asleep. I can't be still and it gets to the point where I must get out of bed and walk around or lay on the couch and move constantly four 3 to 4 hours before finally falling asleep. I'm hoping this goes away after a few more days. I take my first pill at breakfast and initially took the second one at dinner. I am gradually moving the time up that I take the second pill. I'm up to 2:30 pm now.