How do I titrate (taper off) bupropion, escitalopram, gabapentin and buspirone?

You best plan would be to taper off one medication at a time. Then you can see how well you do only removing one medication at a time. The key to tapering off these types of medications is to go slowly and keep in good communication with your physician. I hope this helps. Good luck to you.

Do not do this on your own. Consult with your doctor, and only wean off any of these drugs under their supervision. These are serious medications that absolutely require you be supervised and informed by a doctor qualified to wean you off of these safely.
Do not take this lightly. Very serious, even fatal consequences can occur if you were to stop these medications on your own.

Hi, kaijakiwi!
A couple of your medications are ones that are harder to taper off of. Personally, I wouldn't attempt it except with strict supervision by the prescribing doctor. I'd also be afraid of a recurrence of the original symptoms which is common.
Regards and good luck!
Wildcat