Baby won't eat - formula change?

[Sammyxo]

Has anyone else had any issues with their baby rejecting milk? He's 5 months old and suddenly has been rejecting the milk.
He's always been on Aptamil since birth but since Nov 2019 Apatamil have gradually been changing the ingredients in their formula and I'm wondering if this could be the cause?
My baby used to be a really good feeder and now it's such a struggle, I dread feed times!
Please tell me I'm not alone! Or has anyone been through something similar?

Have you ruled out illness and teething?

Yeah everything is fine, he's healthy and happy but hates the milk.

Yeah my daughter never liked Aptimil. She preferred Hipp Organic (which is cheaper actually) so try that, he might prefer it.

The new aptamil made my daughter so poorly. She started pooing 10 times a day which gave her horrendous nappy rash, it was awful. Took us a week to work out what it was that was causing it, had been to the docs for tests to see if she had a bug that wasn’t clearing and then we changed her milk on the off chance it was that and within a few hours she was fine. She never stopped drinking it though

As of last night I switched my baby's formula to SMA and we've had no issues since! I'm so glad it's sorted as I was stressing for over a week!