DS3 has autism (not high-functioning) and is nearly 4.
Every so often he gets a bee in his bonnet about something. So far we have just generally gone with the flow unless it's dangerous or is just too intrusive on the other DSs's lives. For example, he had a thing last year where I had to be closed in the loo while he went through some Teletubbies "knock on the door" routine on the other side. I just used to multi-task by doing my make-up in there and he dropped it quite quickly. We had to stop him trying to make his brothers scoot on their scooters round and round the house though as it was preventing them from eating their tea or doing their homework .
His latest fixation is about curtains and blinds - he doesn't like them being opened (if they are closed) or closed (if they are open).
Again, my instinct is just to go with this - I really don't care if they are open or closed, as long as I don't have to actually get undressed in full view of the whole street . But is this the "right" approach? By "giving in" to this, am I storing up problems for the future?