brittanylac,Hello and again welcome. Remember that each person will respond differently to medications. I have been on Buspar for 4 years and I have never had any problems with it causing me any side effects. However I take other AD meds so I suspect Buspar is mild compared to some of the meds I am on and any side effects were not a problem for me.
I am on Buspar 15 mg in the morning and 15 mg at bedtime. I weaned onto the med slowly using the 5 mg dose twice daily to start with. Perhaps you could talk with your Dr. re how often per day you are taking this med if you continue to feel tired from Buspar.
Good luck and I think your Dr. advised you well re not continuing Xanax for long term use.
Kindly,
Kitt