Give him his space. That's all you can do. GAL as everyone mentions here! Hang in there. At least in my situation, in-house separation has been very difficult with H not really getting the space that he wants/needs. So there is maybe a positive?
Me, 39. H, 35. 3 boys - 13, 11, 9 - 1 w/ multiple disabilities BD Dec 2012 Sort of a quasi in-house sep Nov 2013