I was taking 150mg of Wellbutrin once a day then it was increased to twice a day. The twice a day spiked my sugar (I'm diabetic) so I went back to once a day. Since then I've felt incredibly shaky inside so I started to wean off the Wellbutrin. I took 150mg every other day for two weeks and now I haven't taken any for three days. I've weaned off tons of meds before so I know how to do it and I've never had much withdrawal but I still feel so very shaky. Is this a withdrawal and how long should it last?