What to do about my mom interfering with my relationship over religious reasons?

So my mom is heavy into Judaism focus on Jewish traditions and Old Testament knowledge. I’m a non denominational Christian and so is my boyfriend. We go to different churches. Anyways, because my boyfriend has stronger roots and closer people that go to his church, I agreed it would be okay to go out to his church a little bit more on a regular basis because if that. While I like my church, I don’t have as strong ties so it’s no biggy. Anyways, for the last several weeks, my mom has been causing a lot of stress over the church thing reinstating I need to get him to come to my church on a more equal basis because that makes things more equal in our relationship and it doesn’t revolve my life around his. I told her to back off and let me make my own decisions as I’m in my 20s and can do so. My boyfriends makes a lot of effort in other areas and comes my way a lot too so I feel what she is saying is quite frankly ridiculous. However, this has brought a lot of stress because I currently still live with her and am concerned this may affect our relationship if I can’t get a hold of her or my stress from her. What should I do?
What to do about my mom interfering with my relationship over religious reasons?
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