Tegretol and upping

i've been on tegretol for well over 15 years now, for my Status Epilepticus (severe epilepsy). i was always on a small dose (600mg daily i think). but due to my epilepsy being poorly controlled, the dose got increased to 800mg - that was around 10yrs ago.

i am 6' 5", and used to weigh around 224 pounds. Since the dosage was upped to 800mg/day, i have gained around 84 pounds in weight, and have allways had drowsiness, lack of concentration, poor short-term memory, double vision and terrible balance. And still the epilepsy has been poorly controlled, still suffering petitmal and grandmal seizures.

So around a month ago, my neurologist was informed of my side effects becoming so severe. He told me they are "toxic side effects" of the tegretol.. Yet told me to increase the dose, by 200mg/day, increasing it every fortnight.

i.e. up to 1000mg/day, then 2 weeks later go up to 1200mg/day, etc.. he told me to keep doing this till i get to 1600mg/day. then possibly go as high as 2000mg/day.. !!

i have to tell you all, that since i started following his advice and increasing the dosage past 1000mg, i have felt absolutely terrible. I find myself needing over 13hrs sleep, then more sleep a few hours later. I also have difficulty reading (despite my eyesight testing ok), and unbearable migraine-style headaches.

at 30years old, my daily routine is not too good at present. And still no benefits have been noticed since upping the dose. On 13th October, i increase it to 1400mg/daily.. :(