Does anyone know the what the equivalent of 900 mgs of gabapentin is in Lyrica?

My neuro doc said that he thought I would get more relief from Lyrica than gabapentin and started me on 75 mg twice a day. However, he forgot to give me a plan to back off the gabapentin, and I forgot to ask.

I take 900 mg 4 times a day of gabapentin.

When I called his office to talk about this, his nurse said he had a family emergecy and was out of the office for a while. I have stopped taking the Lyrica until I can talk to him but I gotta tell ya', while I was on both I felt great! No burning, no numb face, no zaps and buzzing! Gosh, if I could take 'em both...