OP here - thanks for asking - we are doing ok. The Calms Forte has not seemed to help, and the tight sheet isn't helping him fall asleep faster, but he does like it so that's nice. I think my next step is either music to fall asleep to, or melatonin. I need to find a CD player that will play music on a loop, because I think having music and then having it stop before he's asleep would be more disturbing to him than silence. I'm a little leery of the melatonin because I've tried it for myself, and learned I am one of those for whom it has side effects - was dizzy and didn't feel well for a day or two afterwards - and cannot bear the thought of him experiencing that.
we haven't tried melatonin yet either. calms forte doesn't seem to help us. our OT suggested making a nest that my DD can read/rest in, or a tent w/flashlight. not sure if those would be helpful, i think you said your child is younger... we've had ups and downs with music. DD asks for music every night, but it doesn't seem to help - though the silence doesn't help either. good luck! keep us updated!