New to....caring about myself

Hello my name is Paul. I have been through a lot in my life...incarnation,homelessness, drug addiction...you name it... I'm clean and sober now(besides medicinal) I have a son and a fiance but she has lost her attraction to me cause of my weight so this is another bump in my road which I AM going to overcome with the grace and guidance of Jesus and hopefully this lovely community will help. I'm allowed 2700 calories a day but I usually use 1100 u cut 98% of sugar out of my diet I was drinking a 2 liter of soda a day...in an hour... I'm 2 weeks in of no sugar I usually don't eat until dinner time cause I'm so busy at work.. ANY HELP or encouragement is WELL received and appreciated....even bad opinions I'm open to all. May you be blessed