If you look on MN there are lots of fail to thrive posts, most from what I have seen including ebf babies whose mums dont want to give them formula
And a lot of the time, “failure to thrive” is a lack breastfeeding knowledge within the medical profession.
If a baby is truly ftt, it should be a straight referral to paeds. No pissing around with lactation consultants, topping up with formula, expressing, or anything else.
Starvation and dehydration are pretty easy to see to the experienced eye. I had a fab HV who taught me to look at the whole baby- even though she was feeding all the time, and was not gaining “enough” weight by the charts, she was mobile, meeting milestones, happy, smiley, crying, pooing, napping well in between feeds.
Like i said I was actually told not to give formula before seeing the paed, as that can boost weight and mask any underlying genetic or metabolic conditions.
There is absolutely no way to know if a baby is ftt on an internet forum. If you are coming across “loads” then maybe your understanding of ftt is incorrect. If someone is on here asking about a ftt baby you should be sending them in the direction if a medic, not telling them to give formula.
I have never seen a ftt post on here. Normal bf issues, but never one i think the baby needs hospitalisation.