OK, I may possibly be the slowest player in the world anyway, but I'll give you my tip all the same.

As an intermediate step between looking and not not at your hands when playing, practice playing stuff while looking at you hands in a mirror.

I find this help me to be able to play with my eyes having to be fixed on the neck, and you start to be able to picture where your hands are and what they are doing in your head.

Does this help?

JE