Oh dear. Lovely young couple, waiting their first baby and trying, so desperately hard to be very organised. Probably doomed for disaster. In a way it is quite amusing.
So often it is those who are far too organised that end up having problems with enternally crying baby, etc. Back when my were small, my next door neighbour had her first child, so organised spent the last months preparing loads of meals for the freezer. When the midwife saw that at six months pregnant they had already insgtalled n their car devices for securing carrycot (as it was back then) she got really concerned. All went out of window when baby arrived, Mum was so tense with doing everything right, that baby picked up on it and cried day and night. Midwive was also concerned at how tidy the house with a new baby init still was.
I would not be upset with this message, would put aside carefully, and in years to come whole family can have a good laugh about it.
I do think the last line about making tea/coffee etc is relevant. I always used to advice friends becoming g.parents to offer to do things like shopping, washing, ironing for new parents, NOT baby-sit.
Assuming baby will be totally breast-fed then they will have quite a strong immune system from Mums milk.