+whatever to Instant Pot and a countertop oven (I have a Cuisinart) - fantastic ideas that will allow you to meal prep in bulk.
And yes, hummus is a total calorie bomb; if you're not going to log food, I'd at least get used to looking at nutrition labels for a while.
Prepped lunches and dinners that combine lean protein + carb + veggies will help the weight fall off; I'm of the opinion that the salt/fat content of a lot of those premade "healthy" TV dinner type meals means that satiety with them must be a fair bit lower than cooking your own stuff. Roasting off chicken breast, chicken thighs, pork loin, or fish and throwing in some beans or rice (both doable in the Instant Pot) and a few veggies of your choice will take negligible prep time and should improve your results immensely - planning to succeed and all that.
ETA: This Instant Pot bean recipe claims that it takes 5 minutes of prep, which seems too high by a factor of two to me:
https://www.camelliabrand.com/recipe...t-black-beans/
Quick perusal shows there's a ton of tasty recipes that require similarly low levels of effort.