I was on gabapentin for a long time and came off it totally, benzos and kratom made the withdrawals so much easier. I totally know what your goin thru, sucks theres not many other experiences or info about it on the internet.
I used benzos (alprazolam) and kratom for the first week of the gabapentin withdrawals. I had to take a lot more benzos than I would otherwise, but they calmed me down enough to be functional and made sleep possible.
The key though for me was to taper down the gabapentin dosage as low as I could before I ran out. Like you said its real easy to binge then go back to normal dose. Its also pretty easy to go from normal dose to less without much discomfort if you do it slow enough.
If all of that is still unbearable you might wanna look into phenibut if you haven't already. Its real similar to gabapentin but seems to last way longer and is easier to taper down from. I've read a few posts about people successfully quitting gabapentin by using phenibut, but personally only ever used phenibut recreationally. Good luck.