Well, he's gone... I felt pretty stressed/anxious over the weekend and still do! but I keep telling myself it's important for him to have the independence etc.
I do trust the teacher and the activity centre (they're providing some food and I've sent in about 4 substitute meals plus snacks), but it's sooooooo hard handing the responsibility over to someone else.
I posted earlier about the complication of his desensitisation protocol as he has to have two milk doses a day and can't do any exercise for 2 hours afterwards - again, teacher and centre have been fantastic, but it's hard to stop worrying.