Dear Donna,

on the gabapentin, may i suggest you add/increase doses, first in the evening, then in the rest of the day, and slower at first.

• Start with one pill (300, or 400mg) at night. take it after you are sure the Metformin is going to stay down. the last thing you need is multiple meds coming up. Do that for 2 nights.
  
• The 3rd night, increase the evening dose to target (2 pills). Again, stay at that dose a second night.
  
• Next, I'd introduce a midday dose - one pill. See how you fare with grogginess or other side effects, before stepping up...
  
• Then, add one pill in the morning. See how you fare...
  
• Next, increase the midday dose to target (2 pills) and see how you fare...
  
• Last of all, bump up the morning dose, to target (2 pills).

i've done it this way with Neurontin before - and with other 3xday AEDs because they tend to cause grogginess which can even be convenient at night, a nuisance at midday, and a horrible in the morning. my past doctors have also suggested this approach.
that is just my input, clearly, listen to your own doctor since so many meds are involved and you are unwell still, and your own body.

you might need to wait to add the neurontin until you can handle the Metformin without having nausea. it depends which is more important to get up to target, so ask the doc.

many healing hugs dearie

~ waves ~