My 2sats, general approach I recommend:

First, focus on gradually reducing your Refined Sugar intake to near zero, then all Carbs near zero.

Consider eliminating leafy greens and a small list of veggies after your own research/sensitivities. Take your time and adapt at your own pace, customising based on how you feel and eliminate / re-introduce / tolerate certain foods.

Then look at increasing red meat consumption over time. Mostly Beef, whatever cuts you prefer. You’ll gravitate to higher fat content over time naturally.

Intermittent Fasting is the way, but it will come naturally as the quantity
of food you eat (and waste you eliminate) decreases over time, based on your body’s actual needs.

Eat when you’re hungry, as much as you like, until you’re full (60-90% red meat). The key is to wait until you’re truly HUNGRY - go a little bit longer, another stomach growl or three beyond what you normally tolerate.

Practice over time, gradually getting stricter and heading towards Carnivore’ish (60-100%), and it will all come naturally and comfortably over time.

6-8 years later and I’m cycling back and forth with ease, can lose extra weight easily. I relaxed down to about 90% Carnivore, now regularly ripping down to 70-80% as a break now and then, and can hop back on and go strict again days or weeks later, no problemo 👌 all within a few kg of my target weight