7 month old crib training

I have been trying for 3 days to try and get my baby to sleep in her own crib. But every time I put her down she will scream and cry inconsolably. No matter if I put her down awake, drowsy, or asleep. She will cry well after I’ve picked her up until I breastfeed her back to sleep in my bed. I can’t listen to her cry. I’ve tried. I’ve given her bottles in her crib but she won’t fall asleep unless it’s to boob. I’m tired. She’s tired. I don’t know what to do. She won’t even be rocked to sleep. I’d get into the crib with her but i weigh 180 sooo that’s not an option.