It seems like a familiar pattern. A number of us recently were comparing notes on the effects of visual tracking and convergence issues have had on our kids.

Slow and messy handwriting
Oral reading inaccuracies
Lowered coding score

I know personally, in addition to amblyopia related issues my eyes switched from far-sighted to near-sighted between 9 and 11.

So, from my near-sighted perspective, sounds like the symptoms fit a vision issue that may or may not be related to acuity.