I had success w a prolapse. I followed the old timers advice and rinsed it in cool water
(couldn’t get all of the dirt off I don’t think you can in some cases) dusted the uterus w granulated sugar- which is supposed to reduce swelling, lubricated the uterus and my husband replaced it. I wasn’t strong enough. Vets don’t like the sugar idea because of bacteria and it’s really best to see a Vet especially to learn how to replace it in case you need to. We followed up w penicillin and our ewe is fine as is her jumbo lamb. There are arguments about whether a prolapsed ewe should be bred again. I haven’t decided. Good luck.