Used to be 165, doubt it's possible now I am not 19. You take comfort in the truth that the more you have to lose the faster it comes off and go from there. At some point fasting helps too, but it's usually 3 steps forward and two steps back.
Example:
Went on vacation, got quite sick (adenovirus cough) sprained my ankle and gained 15 pounds from all the food, inactivity and drink
Went back on low-carb on Memorial day, haven't been really strict either and am down 9 pounds today according to the scale. BP is still up but going down. My FBS is as good as it was or better at 98 post P BS is in the 80's

Once completely "keto adapted" you likely possess a permanent tool that's a powerful health hack. Only thing different this time: taking Omega 3-6-9 plus Alive! Men's 50+ Vitamins.