It doesn’t matter when the milk was pumped, the main nutrients are the same. Maybe fat content changed a little, but it’s fine. No need to add vitamins to formula because it has all the vitamins baby needs. I would finish out your frozen stash and switch to a formula that works for you. That’s what I did. Also, if baby isn’t on solids they will be soon enough, and they will be getting vitamins from there too.
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