Read what Glory wrote!
Read it two or three times, in fact.
I hear the desperation in your post and I understand how you can WANT to lose all the weight quickly, but if you set unrealistic goals, you're only setting yourself up to fail. You won't be able to meet those goals and then you'll give up in frustration and despair.
3lbs a week, especially at 180 isn't really reasonable. The conventional wisdom is about 1% of your bodyweight per week. That will vary some based on your water weight, TOM, and many other factors, but the reality is that most of us *don't* lose 2+ lbs per week consistently.
Yes, it's possible that you'll have an initial rapid success where you might drop 5 lbs or more the first week or two. Mostly that's water. Once your body stabilizes, then you won't have that same quick loss going forward from there.
And I noticed you mentioned that you expect to exercise a lot. I'm here to tell ya ... there comes a point where you exercise so much that your body says "hey .. I need energy!" If you restrict your calories and really hit the exercise hard, you might actually be sabotaging your weight loss. Your body needs fuel to exercise. Don't undercut any progress you might make by overworking and underfeeding yourself.
I know it's hard and I know how easy it is to be impatient for the pounds to disappear. Just remember: You didn't put on that weight in 3 weeks or even 3 months. You won't take it off that fast either. You're better off to build sustainable habits that will take it off and KEEP it off!
Good luck!
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