If you have cut your calories below 2000 per day and you are still stuck after 8 months you have probably slowed your metabolism.
I am 32, have 2 kids, wife, manage a company and have managed to stay decently lean. Not great shape but decent. I look like Linford Christie compared to all of my buddies. I have been in the office for at least 8 years now. What I try do is:
Grill or Bake a bunch of Chicken or other meat on Sunday and bring with me most of the week. I’ll usually keep some vegetables/salad and olive oil for salads.
If you have a kitchen at work scramble some eggs everyday and eat whole grain toast for breakfast. I usually do that every morning.
I keep snacks at my desk and eat those in between meals (I eat too much here so it’s probably not a great idea.)
I refuse to count calories now but that is probably part of the equation for success to some degree honestly. That a dropping the booze down.