Sorry you're going thru this. I have a 10 yo dd on
Concerta and we're still tweaking things to find the "magic dose." If you want to try to go without, and it's truly not harmful, I'd definitely do it only going into the weekend, so you can watch her more closely and even give a bit of Strattera if things get too rough.
Hopefully, someone who really knows what he/she is talking about with Strattera will come along shortly. I know just enough to probably be dangerous.
Good luck--I know how tough it is...