R.V.
My Mom use to always clean my babies mouth with a white softest cotton or voil cloth piece tied to her 2 fingers use to put Glycerin on it and use to clean my babies tongues and throat with it they would Gag at first but she use to pull out a lot of phlegm that according to her accumulates due to excessive Milk drinking.. it just now makes sense to me the cleaning of the Tongue that is recommended to us to do with Brushing.. but just a suggestion just follow it if you feel comfortable.