No problem. Remember all babies are different so it may take more time or less for it to go away for yours. My nephew had flakes til about 8 months. It's definitely annoying knowing and seeing your baby with flakes but it's a natural thing for many.
When she got to three months I took one of my brushes that was a little tougher and gently did circles... it took off more than the soft brush. Just be careful of the soft spots of coarse.
Take a soft brush and when bathing brush in circles. My little one had the same. It takes a while for it all to come off but it will eventually. Give it time. I think by the time mine was 3 months it was completely gone.