3 months out & stall?

I've lost 73.5# but recently just start incorporating more lettuce, veggies, and fruits. Not sure what the deal is but for about 2 weeks now - I've been stuck between 253.5 and 252. Frustrating. I've not cheated once truly & I don't exercise as much as I should because I work anywhere from 10-16 hour a day and by the time I leave work it's dark - gym's closed - but I just received my treadmill today so that will change - get 100+ ounces of fluids a day, with 3 or 4 meals and either a protein shake or bar in the morning (the bar is Atkin's meal replacement bar - Cookies and Creme - 180 cals 15g protein and 20 carbs which is about the same as my protein shake) Lately - I'll cut up boneless, skinless chicken breast with broccoli, red onions, mushrooms, and celery a little garlic powder, FF Italian dressing, and some spray butter - I can get in about 3 tablespoons of this and be completely stuffed, also do Tuna Creations in the pack a lot, or just planned grilled chicken. I don't use salt anymore. Rarely ever drink crystal light, but do have a powerade zero - approx. one a day. Take all of my vitamins.

Get in about 800-1000 calories a day & 90-110g of protein.

Any other suggestions?