How do I 22F break up with my boyfriend 30M?

I am nearly due to have my baby and I think that it’s best for me and baby to leave and go back to my home state before the baby comes.

If you would like to know why please have a look at my previous posts, but in short, I don’t feel like I am treated the way I should be and I have felt unsupported by my partner my whole pregnancy which has made it really difficult as my family and friends live in a different state.

I feel like it’s best that I talk to my partner or write him a letter and then read it to him. I feel like things will be worse if I just up and leave so I don’t really want to do that.

I feel like I have to be very careful with what I say as I want to try my best not to anger him as I know he is not going to be happy that I am leaving.

What’s the best way to approach this so he doesn’t get angry?

TLDR I think it is best for me to leave my partner and go back to my family and friends who are my support.