glad he's seen the counsellor

but something that could help is to get him to write a letter to his grandad, about what he is feeling, how much he misses him - he can put the letter at his grandad's graveside or keep it somewhere safe.

Also remind him that even though his grandad isn't here on earth, that his grandad will always be with him and in his heart, that his grandad is watching over him like a guardian or a protector and that he can talk to his grandad at any time to ask questions - that he may not get the type of answer he expects (his grandad speaking to him) but he could get a sign - like an unusual rock or something like that.