My MIL is watching our son during the day while my husband and I are working. I drop him off at 7:30 and my husband picks him up at 4:45. I usually nurse LO anywhere from 60-90 minutes before I leave, usually from 5-6 and again from 6:30 until 7. I then provide my MIL with a 4 oz bottle of fresh milk (pumped from previous day) and 3 4oz of frozen milk plus 1 or 2 "snack" bags of 2oz frozen milk. In all, I am giving her 16-18 oz for a 9 hour day but she has been repeatedly complaining that I'm not giving her enough milk. It's my understanding that babies given breastmilk only need about 4 oz every three hours so I'm under the impression she is using the bottle as a way to pacify my LO since he won't accept a pacifier, but she's making me feel like I'm not feeding my son enough and should let her supplement with formula.
I'm very frustrated and just need some support or advice on whether I should really try to give her more milk, or just encourage her to use other strategies to calm my son when he gets fussy - who, by the way, is a terrible napper! Most of the time, I think his crying/fussiness is just tiredness, not hunger, but I'm feeling a lot of pressure. I should also note that she is also watching her great niece, who just turned one and has always been given formula, her other granddaughter was also formula fed, and she gave formula to her own children and therefore has no experience with breastmilk and doesn't understand that breastfed babies don't need increasing amounts of milk.