J.S.
My kids have an amazing school. We agree there is no point in services that aren't needed but the problem is sometimes something stressful pushes them off course. To add back a service at that point is nearly impossible, at least not in the time frame.
I wish I had the IEP with me so I could quote the exact wording but what they do is put the service on a school year time frame, not daily or weekly. Then add something like as needed. That way they aren't getting unneeded services but if they do suddenly need them, boom, right there! Then if it needs to continue we have the time to adjust the IEP.
There is no testing out, just we meet, for what seems like forever, we figure out what is needed, what is not, then we adjust the IEP.
Just about everything in an IEP is pieces. My daughter is just straight up ADHD, her testing accommodation was the last to go. Oddly she was testing average with the accommodations, now she is off the charts without. Guess it was holding her back. My son is a sophomore, very few things are left on his IEP either. Still we keep some for him, just in case.