DS2 is 7 months, currently working night shifts and giving him formula when I'm at work ( can't express well). In two months I go onto day shifts, working 2-3 12 1/2hr shifts a week. Will my supply be completely messed up if I don't feed or express on these days? Work is pretty flexible so I can request to not have two in a row, and he still feeds 2-3 times a night, will this be enough to keep my supply up? I have an hour break so I can express then if I have to. DS2 has a milk protein allergy, so want to keep feeding for as long as possible.