Hi. I'm online and happy to answer your question today.
Do you know why you had crossed eyes at your age?
Well, as you know, 10 days after strabismus surgery is way too soon to start worrying about continued double vision. The scotch tape trick works well.
If you still have diplopia in the future (a term open to definition....) then you doc could do an 'adjustment' surgery. Or, maybe, you have adjustable sutures? Although they would already have been adjusted......
Will double vision end gradually or quite fast?
You will not damage your right eye by using it more or straining it.....
It varies from patient to patient......hard to answer that one, except with a "yes" :o)