Hello there, MarieCutie!
You didn't say when your 21st birthday is, but might I offer a small suggestion? If you think it's out of line, just disregard
.
I suggest that you consider making your goal to "Lose as Much as I Can" by your 21st birthday. Then concentrate on working your plan. I've found that setting a deadline for weight loss can sometimes set one up for disappointment if, for some reason, your body doesn't release the pounds on the schedule you've set up.
Whatever you decide, know we're all in your corner, cheering for your success!