Anyone else have this experience as you finally got some accomodations made and saw your child not "instantly" know the material?
Yes. We felt this way with the grade skip at the beginning of the year. When DS felt he was really struggling (because he wasn't getting 100s on everything), I had a fleeting moment of thinking "Oh no, what did we do?" I thought maybe we had made too big a jump, even though all indications were that it was for the best overall. It passed though, and things seem to be going OK now.