Jul,
Ya, i agree with mashy tat you've got to find different activities to keep him occupied. I know it's not easy for you. Cos ethan is also v v active. Ppl won't understand wat i meant by active until they see him with their own eyes. but yr sam sounds more active than ethan!
What we do with ethan - read books, flash cards, play puppets, let him crawl here & there, climb up & down the bed, bring him outside to train him to walk, let him kick ball, chase after our dog, watch dvds, look at photo albums, play his toys, mainly his cars. now he loves to doodle with his crayons & doodle board.