Hello Karen and welcome to Neuro Talk, here is a link to the epilepsy forum, you can post the keto ? there and get better results, and do not hesitate on asking, folks here are great, helpful and kind,

http://neurotalk.psychcentral.com/forum11.html

the keto Diet was just coming out when my son was having seizures, he had activity on both hemispheres and the diet did help and I somehow got lucky well actually my son did he grew out of the epilepsy, the neuro said sometimes it happens, I have talked to others who liked the Keto diet, about the G-tube, i can say I have not hear of anyone on G tube and keto, hopefully you can find some good answers here and or you will be guiding on what and or where to go for more info, I pray and wish you the best of luck with your Child

Karen I can not remember if my son was lethargic or not, sorry, but it was shortly after Puberty he stopped having seizures, fingers crossed for you and your little one