Think about a whitening schedule: initial daily sessions till desired shade

https://privatebin.net/?d23bd2f9c0e89951#7qjS5tbADjfFjFag5FqRDzuXfBtgtKSenMXTSs57F6Rb

Think about a whitening schedule: preliminary daily sessions up until preferred shade, then weekly or regular monthly touch-ups to keep brightness without over-bleaching.