My daughter, 3 yo, has gorgeous goldilock hair, I think 3b. It is always such a fight to get the knots out. I try 2 times a week to finger comb her hair in the tub with lots of conditioner, loreal no sulfer for curly hair. But her knots are mainly on the back of her head where she rubs her head while she sleeps. Is there anything I can do to eliminate those knots from forming? Like creams or a silk night cap?