Need some help for a new mum

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My friend has a six day old. She had him via csection.
Shes having trouble feeding getting her milk in, the midwife today told her either her milk hasnt come in properly or will not come in. Tonight friend has been told to feed him expressed (getting 20mls from both boobs by 15mins), and formula mix.
Midwife revisits tomorrow. She has a lactation consultant referral.


Words of advice and wisdom needed please