I have a 3 hour rule for saddles: You won't know if it's the right saddle until you've done a 3 hour ride on it. Most saddles feel just fine when you sit on them in the shop. I've donated at least 2 cardboard boxes of saddles over the years, saddles which worked fine until they didn't.

That said, just getting one's butt in shape to sit on any saddle for 3 hours takes at least 2 months of riding, starting from zero. My system for breaking in a newbie butt is to ride for 30', no more, every day for a couple of weeks. That usually does it.