Good for you, that is awesome. Sounds very similar to what i ultimately ended up doing around 10 years ago. I started by doing the same, cutting out regular soda, eventually switching from diet soda to diet green tea and water. Cut out eating fast food and greasy burgers. I also found the elliptical worked best for me, i was doing that, walking/jogging and was losing around 20 pounds a month. I went from 350 to 200 before i got my skin surgery....time/life has taken its toll and i got back up to 254 personally but it took around 8 years for it to come back. Now trying to get down to your current weight of 199....i've been doing Keto for the last 3 weeks and am down 12 pounds. Anyway, back to your story...very inspirational and a lot of hard work, congrats.