OP.
I've had a partial prolapse myself and currently living with it, managing the symptoms through lots of pelvic floor exercises, and trying to avoid surgery.
I would recommend the thread mentioned above.
It's important to know that, as my gynae told me, until at least 9 months after birth, or more likely after you stop breastfeeding, the lovely hormones making your joints and muscles relax will continue to flow.
So no gynae/surgeon worth their salt should consider you for surgery, unless your case is severe, until you are past all of that.
IME, I could really feel a difference after I stopped breastfeeding, but I still bf past a year with my DC2 because that was more important for me.
The other advice I've had is that the longer I can delay surgery, the better. I'm currently 40yo, and have been told that if I had surgery now, I would be likely to need more in my 60s. So better to wait as long as possible, and continue with the pelvic floor exercises.
A pelvic floor Physio is worth their weight in gold, if you can access one via your GP/gynae.
Lastly - this is so, so common. Honestly. I've been quite open with friends about my trials and tribulations and the majority of us DO have problems of some kind after childbirth.