It's not impossible! You just need to reevaluate each time you go down since this is uncharted territory for you
I never in a million years thought I would get down to 120.
Never. It was only because my scale was borked that I wound up getting here. I thought I was 10lbs heavier the whole time I was losing weight!!
I'm glad though. I don't know if I would have pushed myself to get here had I really known how much I weighed. I really like my body despite its imperfections
I also have never weighed this little in my adult life! I know I was in the 130s in elementary school!