Teeth Whitening

Went to the dentist and he said i will be needing 2 sessions ( 3 rounds of in office treatment of 8 mins in one session) . My initial shade of front teeth were 2R1 and after one session they became 2M but thats not what i want . He said i will be needing 2 more sessions to actually reach 1M , i am really disappointed, i mean not disappointed at the dentist or something but there’s this guy that i have a date scheduled in a month and wanted to look better for him, i am scared that i will never reach the actual white teeth ( i dont mean pearly white or like celebs)

Edit: i want A1 shade