<human>: Can you succinctly summarize the text in 1-3 sentences?

I've been lurking this subreddit for about a month now for inspiration. Started my journey first week of April.

Info about me:
* Male
* Height: 6' 2"
* Start W:  320lbs/145kg  (April 2nd)
* BMR calculations comes to 2700-2800
* Have hypothyroidism but been on meds for 3-4 years (normal levels now)

Story:
I limit myself to roughly 1500 calories / day. No more than 2000 at all any day of the week.  No more pop, no more candy, no more fast food.  I drink only water (mixed with crystal light packets) at about 100oz or more everyday.

My meals consist of various things such as (including snacks),,,,eggs, subway, unsalted nuts, oatmeal, salads, steak, chicken, fiber 1 bars, and usually at least 1 healthy choice steamer a day.

Probably a little more carbs than I should be getting but even doing cal in / cal out, I think I should be losing weight and I am not seeing it. (keto is not for me)

I also started to walk a minimum of 4-5 miles a day. Recently going up to 8miles if it is nice outside.

The first 2 weeks I lost 8 lbs which I am assuming is mostly water weight.

The problem is that ever since the first 2 weeks, I haven't lost a single lb.  I have been hovering at 312lbs for 3 weeks now.
<bot>: 320lbs - lost 8 lbs first 2 weeks, haven't dropped a single pound for last 3 weeks. Seeking advice.