God is so proud of you. And you should tell your son that changing for God doesn't mean losing yourself, but it is you finding yourself. You don't have to change every aspect of your personality, but just the things that take you away from God. Also remember that wherever he is at in his relationship with God, It may take a while. You need to make sure you are trusting God's timing. Don't rush your son, or try to force him to change or it could have the opposite effect. Be a role model and show him how much better life is when you are living fully committed to God. Have a blessed day

Your son is blessed to have a father that's pushs them to the Lord