So i got my hair dyed today...?

Today i got my hair dyed, and i bleached some of it. The lady had to put a toner in it because my previous color wouldnt come out without looking like a brassy pink. Anyway, she put the toner in and told me to wait a week before putting another color in. She said the toner would fade in about a week so i could put another color in. Well, im very impatient, and i was wondering if instead of waiting a week to put another color in if i could just wash it 7 times ?