Stopping lactation

I need some reassurance that everything will be fine with my baby using only formula. I am currently only pumping but my breast is engorged badly. I have to pump every 1 and a half hour and I am feeling disgusting and disastrous. I am kinda considering stopping only if I get to mastitis but the freedom of not worrying about my milk is also in my mind. I am in a huge battle since I want my baby to be fine and receive all the needed antibodies but in the same time I’m not functioning and baby needs a mother.

Please help me with some of your experiences. Is your baby doing fine? How do you manage constipation?