different view here but most plumbers that are fully qualified spent 3-4 years before they were allowed to do gas,
Although you are doing gas he is still checking it,
They all feel that everyone must do 5 years experience before starting gas,
My advice is ask him, if you cant talk to him then you wont work for him for years
He may feel that helping with the NVQ is enough for now and you need to wait for gas
or that you should have NVQ 3 first
Offer to take pics in your breaks and see if he will sign it once you have completed it??