Sorry, but I can't figure out how to send a private message....
I hope that little Oliver gets to feeling better and that all get back to normal life in the house. (Whatever normal is with an infant!) I'm pretty sure that you are still navigating the waters of Downs Syndrome. I don't have any first hand experience, but the sign language program that I use for my kids also boasts success with kids that have Downs. I thought it might be worth checking into.