Milk supply

So I'm currently 30 weeks 2 days with second baby , little miss is due in 2 months if that, lately I've started lactating and my milk has come through, and I was wondering would it help to get my milk supply going good now before she arrives and freeze them ready for when she is here, but I just don't know how to work around breast feeding her while my 10 month old is learning to walk and talk, any helpers please xx