Small Fiber Neuropathy

I am currently on 1200 mg of Gabapentin twice daily. My pain is not totally controlled at this level. My pain level gets worse as the day goes on and is worse at night. I like my one glass of red wine at night. I wonder if that is an issue with my pain. I’ve tried adding Cymbalta that created severe dry mouth then stopped that and tried Lyrica and that was just as bad. Now my doctor wants to try increasing the Gabapentin to 3600 mg a day. Here is another point. Can anyone tell me about their experiences