Reviewing the literature online, seems to be somewhat limited in recommendations:
www.ncbi.nlm.nih.gov
Your thoughts SDN?
And if safe, up to normal max doses (3600 mg/300 mg)?

Gabapentin and breastfeeding: a case report - PubMed
The aim of this study was to describe the milk-plasma ratio and relative infant dose of gabapentin in a breastfeeding mother and to determine the well-being of her exposed infant. The mother-infant pair was studied over a 24-hour dose interval at steady state. Gabapentin concentrations were...

Your thoughts SDN?
And if safe, up to normal max doses (3600 mg/300 mg)?