You may not need anything after the oxy if you begin to take it less frequently and in smaller doses, but if you find that you need something that's not as potent as oxy, calling to ask about the aspirin is a good idea

I know you've tried a lot of sleeping pills, none of them have worked, and you're not interested in trying anymore…

But since you are dealing with so much irritability since the stroke and surgery, it may be a good idea to call your pdoc to see if he can recommend something (that isn't a sleeping pill) for that, and it may provide the added benefit of helping you sleep better