When do you take your Wellbutrin? Some times just taking it earlier or later can make a difference.
I know this may sound strange but you may may to journal on what you are eating in the afternoon/evening. I have discovered that if I eat certain foods in the evening I am less likely to be able to sleep well. Like for me I can have all sorts of caffeine and still sleep but having spaghetti for dinner is a no no. If I eat a high protein dinner or snack before bed it helps. Dunno... just throwing some stuff out there.