Changing milk and sleep gone weird - any link do you think?

[Oceanmagic]

I changed my DS, 14MO, from Aptamil 3 to half Aptamil Toodler, half cows milk a couple of weeks ago.

3 days later, and ever since, his sleep has been weird - waking earlier than he usually does and not sleeping as long, he used to go 12 hrs no worries.

There are other factors (aren't there always?!) still in 2 to 1 nap transition, teeth, a weird cough - might also be milk related?

He's also got little spots on his chin, never had them before and seem quite persistent.

Anyone recognise this?

Could you try just cows milk and see if that helps? Growing up milks are full of sugar and nutritionally unecessary. It's recommended that formula is not needed once a baby is over 1 year old. If you think it's causing problems now might be a good time to make the switch .