Period question...

Bell🧜🏼‍♀️ • My 2 angels 👼🏼 My Taurus & my Gemini. ♉️ ♊️
My periods would normally last 7 days a month but for the past 2 months it's only lasted 6 days... I know it's only 1 day less but is that normal? Lol drama queen right here but I need to know 😁