@Hope mine got milk stain on his tongue, don’t know how to get rid of it. I used tongue cleaning brush I bought from boots, but no luck.
My baby had a white tongue but it has only just disappeared. He is 17 weeks now x
I have never cleaned my boys mouth, just starting to rub gums to prep for brushing teeth but more for experience than to clean
If it’s not going it is possibly thrush. Could check with the dr to see?