How long does it take for your milk to re-regulate

[Mayghan]

My dd just went through what I assume was her 3 month growth spurt, she went 2 weeks of nursing non stop, and pooping only every 2-4 days (loads of wet diapers). Monday her nursing went back to normal, and she's pooping 2-4 times a day! Problem is now her poop is green! My breast feel full all the time so Im assuming she increased supply so now drinking only foremilk. Yesterday I started always putting her on one breast until she starts popping off and crying (usually the second time she nurses on that side) so Im guessing its empty and then I switch her sides. So is this normal? When do I worry??