Think about a whitening schedule: initial day-to-day sessions up until desired shade

https://privatebin.net/?f78edfcce68696a0#6Q92Jg2XgxkaPx5rYf5c3JAY3GaP57iYyGBzmGvPmzM4

Think about a whitening schedule: preliminary everyday sessions till wanted shade, then weekly or monthly touch-ups to keep brightness without over-bleaching.