UPF is a meaningless term unless you frame it in the context of health risks. What health risks are there for a baby from formula? Very few. A slightly higher chance of an ear infection, or a 2% greater chance of being overweight. Things so slight you can only see them on a population level. What are the health risks of not having formula if needed? Jaundice, weight loss, dehydration… it’s really not the issue here.
I know loads of kids who were breastfed for years on end who are obese as their mums, while very diligent about the breastfeeding, seem to be woefully undereducated about food. I was with one a few months ago who was telling me about how she breastfed her kids to 2, while handing them a slushie. The youngest is only 4.
Equally I know loads of formula fed kids whose mums are diligent about their diet and they’re fine.