Could you outline to him the following scenario:
Baby cries at 3 am. Do you
(a) lie in bed while your wife plugs the baby onto boob for a quick snuggly feed in the dark, after which you all doze off again;
(b) get up, turn the lights on, go down to kitchen, faff around for 10 minutes getting a bottle to the right temperature while the baby works itself up to a fever pitch, spend 20 mins trying to get now hysterical baby to drink its bottle, put baby back to bed, spend an hour trying to go back to sleep now you've all had to wake up properly.
I think 'no-brainer' is the phrase we're looking for here.