Do not push him, you may just be pushing him away from the Lord, best to pray for him and be kind to him as Jesus would had been to him too.
Lord bring Joe to salvation on his own, for you want us to come to you out of our own free will, not pushed. Touch his heart and open his eyes toward you as you have your perfect will done in his life and situation. I pray in Jesus merciful and mighty name. Amen.