i was told to take 300mg Gabapentin once a day in the morning for 3 to4 days then take 300mg morning and evening between 4th to 7th day and then 300mg lunchtime so that you are then taking 900mg a day.
Was told that this 900mg is the first effective level for pain and to give it 6 weeks or so to see how things were on that level then titrate up or down after that.
You may find the lower levels ok Moonbeam it was when the consultant told me to go up to 2400mg (800mg x3 a day) that the Gabapentin affected me badly.
A low dose of just 300mg a day may work for you.
Hattie