grumpys answer is what i was taught when started raising rabbits , if you breed sooner than that , you need to watch your does they get wore out, its hard work . When i had rabbits,,42 days is what i did and kept getting more does and having more rabbits..
I got carried away,, way carried away ,of rabbits in the freezer , no buyers to start,,,and i was havin to work my butt off to aford the feed. i told my dad that i had to go to the auction, he said,,you DONT NEED MORE RABBITS, LOL,,,i told him no, i need to sell some.,,,,,
if your just starting out, 42 days after kindle is often enough ,that gives you five litters a year i think.