I had a read on this the other day and my conclusion was that the research was very minimal and pumped milk has just the same goodness as putting them on the boob x
I don’t think saliva to nipple contact is the only way to sync to your babies needs I think smelling them, cuddling them and kissing them had the same effect.
Your body gave birth.. your body knows your babies age. Also being in contact (Smell, kisses, hugs, snuggles and cuddles) with your baby is enough if your baby is sick. Think if you have a sick person at home... you still catch cold even if you maintain minimal contact.. it's like that.
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