I think that’s to be expected when your young and you’ve just recently been moved into the 7 role, the important thing is he has the talent & he’s a natural football player, he’s running games really good, he’s powerful, he’s scoring try’s and setting up try’s and he’s improving his kicking game every time he plays.
You can teach defence, as all these moving pieces become more natural to him I think you’ll see a vast improvement with his defence ..
That’s why I’m on the be patient and give him more time before bringing him into 1st grade list, there’s no rush & he’s only going to get stronger better and more confident ..