I had some prolapse. Not quite the same, but similar origin to the problem. My suggestions are:
1. Get a referral for a physical therapist who specializes in pelvic floor dysfunction (yes, they exist)
2. Do what she says. Every day. Consistently. Focus on technique, not on how many of the exercise you can do.
Give it 3-6 months and you'll be completely better I bet. It's not just kegels. And you've read, I'm sure, that "most people do kegels wrong". This is in fact true. The point of kegels is to *isolate* the muscle. Most people (myself included, initially) will naturally try to recruit other large muscle groups (abs, butt, etc) and/or hold their breath while doing them, which can be counterproductive. Your PT can help you with this, plus can help you correct any other lingering postpartum issues (such as split abdominal muscles, which can actually contribute to incontinence, lower back weakness, etc). IMHO, these folks are worth their weight in gold and a visit to a PT should be a standard part of postpartum care.