Kids, Communion, and Baptism

Hello!

Our son (7) has expressed a desire to take communion and be Baptist (praise God!). We have been holding off for now until we were sure of his desire as the communion aspect of it was definitely initially spurred on by a friend who partakes.

Over the last year he has pretended to take it with us and I've been supportive with him in it as I in no way want to deter him from wanting to join in. He's grown so much and it's becoming clear to me that his faith may be genuine. He understands the gospel and even prays through it at bed time. He knows the purpose of communion, not perfectly but clearly understands the main point.

Thoughts on letting him partake in communion? Especially before baptism? Thoughts on baptism? We're credo Baptists.