Jordan Coffman

Are you still in contact with your dietician? If not give them a call. They should be supporting you along the way & should work with you to develop a way of eating that works for you. How you are eating now should be getting closer to how you will eat in the long term. Do you still track your food?
Personally I kept my food choices pretty simple. Protein & vegetables for lunch & dinner. Chose healthier cooking methods. Cooked & prepped 90+% of the food I ate myself. Anything I did purchase I read the nutrition panels very carefully. Kept low fat, low carbs, low sugar. Portion size was very important.
And yes as @catwoman7 said the last pounds are the hardest to lose & take the longest to go.
Congrats on your weight loss so far.

No, I just weigh it before I pack it and/or bring portion controlled, single-serving items (I am very guilty of eating Lunchables and leaving the crackers behind in a pinch LOL). I actually pack both my Breakfast AND lunch AND Snacks when I go into the office, a 10 hr day that starts at 6:30 AM once a week.
The way I figure it I need to take care of Future Me's needs so I don't feel tempted to go poking around in the vending machine.
My lunch usually looks like this (I am 18m post op and am in maintenance, but my calories are low because I am a small person):
Breakfast:
Zero sugar Chobani, 1/4 oz of chopped walnuts or pecans, Super coffee Protein Shake as a mid morning snack. (all in, about 200 calories and 25g of protein)
Lunch:
Veggies, some kind of dip (if you aren't making dips with greek yogurt what are you doing with your life?), usually a couple of "lunchmeat roll ups" that are each one slice of deli meat and half a slice of cheese, another 1/4 oz of nuts (usually pistachios this time), a couple pickle slices (usually somewhere around 250-ish calories and another 25g of protein)
Snacks:
Options include Babybel light and a couple triscuits, Campbell's Well Yes sippable Soups, Protein Shakes, or half a Protein Bar (I usually end up with leftovers)(any of these would give another 10g or so of protein).
I eat dinner at home with my husband on these days and it's usually something protein-heavy