I had to restart the thing to.
I figured it out. Get the full farming thing, cause once you can get fishing, the food piles up.
Then worry about all the other stuff.

My friend told me, she got one guy, to breed with any woman 18 and over. She was getting one girl who was 60 to breed still.
Not a single woman was working, all the men.
She got over 80 people within 2 days.

Another hint.
You don't have to watch them go into the hut.
Click on the guy, drop him on the girl. Watch you population meter. If it goes up, she's nursing. If not, just keep picking him up and dropping him on her. or vice versa.
Then you see your population metre jump a number, then pick him up and drop him on the next girl.
I had 11 women breeding at once from the same guy lol