Thrush on baby's tongue?

Adina • I`m 24 with a 2 year old boy and another on the way. Married for 3 yrs.
I don't think my 2 week old newborn has thrush but he does have a white patch on his tongue which I think is from his milk. What do u mommies use on your child's tongue to wipe it & how often do you do it to prevent thrush?