New fast

I’m 71 and am new to fasting, but I’m pretty sure I’ve had insulin resistance for decades. I got up to 220lbs and decided I had to do something. I’ve completed a 24 and a 48 hr fast. Now I’m 24 hours into a 72 hour fast. I bought a ketoBM meter and just took a test. I’m at 0.6. So at 24 hours I’m slightly into ketosis I guess? From the manual, 3 would be burning some serious ketoes. My blood sugar is 88. How am I doing? Thanks Bob