Should I force Sunday school on my son?

Yes you have to compel. As a kid he doesn't know what's good or bad for him. All he knows is, I like this and I don't like that. A person once said, age of accountability for women is 15 and for men its somewhere arround 33(kidding). So you have to be incharge atleast untill you have an assurance that he's with God or he's mature enough to decide. Proverb clearly states to be hard on kids to make them walk in right way. Also Bible says in Hebrew 12 " For the moment all discipline seems painful rather than pleasant; later it yields the peaceful fruit of righteousness to those who have been trained by it.
Hebrews 12:11 RSV

Take it this way, most kids have to be compelled to practice piano or any other instrument they hate it but after growing up they'll realise how great of a skill that they have in hand. So don't worry about compelling him when he gets sad remember he'll be happy some day.

Yup. Sometimes, what is good for you is not pleasant. And what is pleasant is not good for you. Sometimes, what is good for you even hurts. If you love him, you will give him what is good for him, not what is pleasant at the time.

Stick to your boundaries Mama. If he succeeds in moving this one to suit his own will, where will it end? He needs to respect what you say, don’t allow his intimidation tactics work, if you don’t establish respect and reinforce your boundaries by carrying out the consequences ( eg. gaming ban) then by the time he is bigger and stronger than you it will be too late. It’s a tough job but look to the Lord and stick to what you stand for, consistently then he knows where the boundaries are, and what is expected of him.
I have 5 grown kids who were nurtered by their Dad to not respect me. At the same time as this, he was bullying me and wearing me down. When one of my boys was 12 he began staying out all night with older bad boys. At 14 he left home and went to live with an older girl. He never came home and is now an abusive 16 year old Cannabis smoking father of a new baby. I tried my absolute best to bring my children up well, even home-educating them for many years. When they went into the state school system there was a lot of bad influence; if they had respected me and my boundaries it would have protected them from harm.
These are difficult days to raise children.
Another helpful point may be that when gaming, the frontal lobe of the brain is stimulated- this is the same part of the brain used for anger- so maybe discussions and discipline need to be established before gaming- and he needs to understand there will be more limits on gaming time if his outbursts continue. Be strong.
Hope it’s a help.
God bless you x

This is so true. If my parents had not been too weak when I was 12 years old, I would be a good pianist now 😟 and would have had a very good education. I have had issues with self-discipline which has hindered me in life and before I was a Christian my character was a mess. Thankfully God did not give up on me.
I’m 49 and planning to start piano lessons soon.

He’s trying to manipulate her with guilt, to get his own way.

Remember you said this,
“Once we get there, he calms down, has a good time, and is smiling when we leave.“

I wonder how it went today?
Praying peace over this sister and her son in Jesus name.

He did well today! Thanks for asking!

I have asked and He has fulfilled His promise to bring people to mind when He wants prayer for them.
An awesome teacher, John Fenn, has a brief teaching on it.

Love it the way when we draw closer to him, He draws closer to us.

I was going to ask too.

Glad to hear that.