I had this problem with both my boys and now that they are in high school it is no better. I would have a chat to his teacher, our primary school now has a policy that if you don't do your homework you get an agreement, DD11 has always done her homework anyway but this sort of thing would have helped when my boys were in primary school. Wishing you all the best, I know how frustrating it is.

Regards,
Dianne