I have been on it for four months now and it really does seem to help. They increased me from 300 mg 3x a day to 800mg 3x a day. It is hard for about a week on the increase, but does smooth out after a while. You are right on about the brain fog.
What they had me do is one a day for 5 days, then two per day for five days and then increase to the three per day. He did tell me to take the first one at bed time. Same thing with increase. Does seem fewer side effects with constant dosage in the body.

Also doing muscle stimulation instead of the Lidoderm patches now. Just started and have to see if it keeps working.