Hi Pa'a's Mom and welcome to Healingwell. It breaks my heart to hear of one so young with this horrible disease. I do not have any medication recommendations for you, but I did want to provide you a link to a site for parents with young children with IBD, they might have more suggestions for you. Here it is:
http://www.dragonpack.com/ibdsupport/parents/Good luck,
Gail*Nanners*