That's a tough one hun I think you are going to be needing a lot of patience for a while

I don't really have any answers for you, but maybe you could try different textures and things and see if that interest him. And it might be like taste, that he might need to be offered the same thing many times before he'll play with it. Mashed potato was a favourite one for my boys - they loved to squish it in their hands and through their fingers.

I think just keep trying things until something works - but keep it fun. If he starts to get upset then stop, and wait before trying something else. I hope you have some success soon.