So I know that I’m coming in a little late in the game here, but did you continue to breastfeed?
I breastfed our first, and plan to with our second, and I think that if it gets to be too much your body will let you know. If you start constantly having lows, or you notice your supply really take a hit, then maybe it’s time to wean. However, your body is totally capable of still making milk. I would highly recommend still taking a prenatal vitamin to balance everything out (as I’m sure you do anyways).
My only concern would be that it gets to be too much on your plate and breastfeeding ends up being more stressful than it’s worth. In that case, formula fed babies do just fine!!
Good luck momma!