Slow weight loss now

I was sleeved on Feb 26th and I am feeling discouraged and somewhat depressed on the progress that I am making, not sure if I am on track or behind. My doctor says I am on track and a little ahead but I dont feel like this when I read others post. This last month has been a stall for me. I lost on 4# for the whole month and to be on schedule I should have lost 10# this month. Dr wants 10# a month as he states that the window of weight loss is closing each and everyday.

So in reality I started at 378 pound pre surgery, Started the Phentermine diet which helped and got me to 343. was more than excited about the weight loss. Then 2 week pre surgery I was at 316 for surgery day I weighed in at 301. Today I am at 243 and have stalled for a month now I am feeling discouraged and depressed. I have not been much of a liquid drinker and water is not my forte as I use to drink 6-10 cans of coca cola a day. so getting all the water in is hard for me. especailly since most of the drinks were comsumed with my meals. any suggestions on this would be greatly appreciated.

I have not been measuring my meals and I want to know if there is an app for counting protien? I am just assuming that I am get enough in and I dont think that I am since I am losing my hair like crazy. I try to eat fresh veggies and alot of Chicken, Steak, Fish, and Turkey. I am almost tired of eating chicken alot. I am still greatful that I did have the surgery and I know that this is only a tool to help me succeed, but my exercise consisted of walk/run on the treadmill for a mile, then some weightlifting for 30mins. any suggestions on this would be helpful. I can not afford to go to a gym.

Any positive suggestions would be greatful please no negative posts as I feel bad already and struggling with my choices. Thanks everyone.