I still don't think the paed will be able to help. I've seen numerous kids at this exact age be exactly the same. And I'm with doudou, I've seen them just suddenly BE ready and fly.

Get him checked if you want but he's still only 6....and readiness still has a lot of bearing on his ability to 'retain' knowledge. He needs to make connections and have it meaningful...more so than just letters on a page. And sometimes that just takes a certain level of maturity.

Good luck
xxxx