My youngest son has very poor writing. His problem is, he hasn't selected a hand yet, so he'll swap between the two. The teacher has told us that this means he hasn't developed the muscles in one hand enough to be able to control the pencil properly.
I was always aware of his hand swapping but thought these days you wait and let them decide themselves which hand they will choose. It's apparently taken too long now though

and the teacher is becoming concerned.
We're coming to the end of the year now and we've done so many exercises with him at home. I've bought copy books, books with erasable markers, colouring books everything. But he still will swap hands and sometimes it could be for every word.
Has anyone got any tips on what we do next, aside from tying one hand behind his back 1960s style (joke

) . Do we just leave him be and it will sort itself out eventually? Have any teachers come across this before and seen it work itself out?.