What can I do to lose weight, with limited time and energy?

I moved away from everyone I knew (except my best friend who came with me) 3 years ago. Neither of us have been back since. We’re planning to take a bunch of time off in the Spring and surprise everyone. The Spring was picked because of Mother’s day, one of our old friend’s birthdays, and 2 birthdays in the family.
We’re fairly certain we’ll be able to do this, unless something big goes wrong.

And, I know it’s shallow but.. When I visit, I’d like to lose weight. When we moved out, I was 225lbs. now, I’m 205. Which is really not a highly noticeable change over 3 years. I feel like, if I look the same way I did when I left, people will just assume that I stayed the same in all aspects of life, and I’d like to avoid that possibility.

I work full-time and go to school part-time. Which means I have low energy, I have very little consistent, unstructured time, and I find myself not able to eat as well as I should.
In addition, we’re coming up to the winter, and I can’t imagine it’s easy to do much when it’s 40 degrees outside, and pitch black after 5pm.

- If I set a goal of 180 pounds, then that means I’ll need to lose 1.22 pounds per week. Is that something that can be done without completely burning myself out?
– What are some wise, easy ways to incorporate exercise here-and-there into a busy schedule?
– How can I trick myself into (buying and) eating healthy meals?