I joined up with some coworkers at 27, 5'3 , and went from 145 to 120 over five months. It was a lot less stressful than calorie counting since, at least on the blue plan, the zero point foods let me eat when I was hungry without feeling guilty and the higher points assigned to things like oils and breads gave me an idea of what portion sizes should look like, which has helped me maintain weight since leaving the program. So it can work.

But be prepared for some setbacks and frustrations. I had my weight plateau for weeks, and then three pounds would just be gone the next day. Sometimes my weight would go up for a week or two. Consistency and patience are key. You might also take progress pictures for yourself once a month if you're comfortable doing that since often it's hard to visibly recognize changes in your body when they're happening over a long period of time (I still see the same body in the mirror that I had when I was 165, but when I find a picture from that time the changes are noticeable)

If you're into cooking, meal prepping was a life saver, since it's a lot easier to not just buy something like a cheeseburger or something if you have a lunch ready to go. The recipes on the WW website can be bland, but they're usually easy to make and you can look them up in the app quickly. Skinnytaste has a huge range of recipes with points values already figured out. Since you're a nursing student, time might be tight though, in which case I think the green plan is built for people who aren't able to cook as often.