Make sure you eat at least 3 meals, doctors say even 6 small meals helps, a day and if you have to snack, I would recommend gum or something healthy like carrot sticks, celery sticks, apple slices, or even a handful of nuts. Drink plenty of water and if you like green tea, drink that too. Idk if you’re a soda drinker, but if you are, you can always start cutting out the soda by drinking one less than what you usually drink for one week and keep cutting out each week until you either only have one soda every now and then or none at all. Also, if you get tired of boring old water, you can get those Crystal Light or Mio flavorings and put into your water, one of them, I can’t remember which, has a raspberry lemonade flavor that is really good.
Also like
@boo mentioned, sometimes frozen dinners don’t fill you up, so I agree you should try to make your own food if you can. If you have a steamer, you can steam vegetables up and add a little seasoning and it will be delicious.
Exercise, you can pretty much do whatever you are comfortable with, walking, yoga, dancing, squats, jumping rope, jumping jacks, whatever will get you moving. I would change it up though each week or at least every other day, because doing the same thing over and over again is going to get boring and lose it’s lackluster.