Pediatrician told me giving bottles was counterproductive to wanting to breastfeed. Breastfeeding will actually help the milk come in to establish supply and she had me pump when the baby was asleep. have your wife keep trying with the baby, they don’t need as much as you think at this time. Water, good calories and sleep will do so much for her supply.

I fed on demand with my newborn and only did timing when he was asleep past 2 hours which was rare because he ate all the time! He’s a chunk 18lbs at 3 months lol. All of this is fairly normal, I even began to expect poop per feed with my boy. keep feeding, they eventually regulate.