Another no tracker here. I did look at carbohydrate percentage of foods with about 5% being around a mental cut off for something that I would use as an ingredient in anything more than a trace quantity with the 2 exceptions of onion & garlic.
I have been getting my blood work done every 3 months only. My results have been good HbA1C down fron 10 (undiagnosed type 2 diabetes) to 6.1 after 3 months & then steady at 6.1 after the next 3 months which is still considered pre-diabetic but a marked improvement.
My blood marker for fatty liver normalised within a month & is still good.
My HDL has gone up a little & my triglycerides have dropped hugely.
I’ve lost a bit over 20kgs, (around 44lbs) down from 105.5kgs, (around 232.5lbs) to 85kgs (around 187.4 lbs). Most of the weight loss was at the start with the rate of weight loss slowing as time has gone on.
I stalled for a bit at 90kgs because I was doing more habitual eating than I do now. I started losing weight slowly again when I started just eating when I was hungry more often. I still do some social eating & the very few special social occasions where I might drink beer rather than spirits but they are planned decisions rather than off the cuff indulgences. I am not gunning for my sainthood yet! 
I have my Dad on the diet now as well & he is getting good results as well.
Will probably get blood glucose/ketone meters just so I can fine tune things a bit & see the effect that different foods & (especially) beer have on me so I know what I specifically have to be wary of.
Good luck with it all people.
`If it helps, my age is in the late 40s. I was 80kgs, (around 176lbs) when I was 20 years old which is where I felt best. That is a mental target I have but I will be happy with whatever weight I feel best at, be it that weight or lighter or heavier.
P.S Good on you Lonejack for doing something about your health & not writing yourself off because of your age.