Greetings @hawalsh, welcome to the forum.
Since it sounds like you’ve been doing your research and have a “pretty good handle on protein and carb requirements of Keto,” you know that the primary key is to restrict carbs. The secondary key is to eat a prudent amount of protein (probably not that much different than you’re eating now?)…
So this begs the question. If your carbs are a given (hopefully <20g/day) and your protein is largely unchanged (roughly 1g per 1kg of lean body weight, but can range broadly around this over the course of a week of eating), then HOW MUCH FAT DO YOU NEED?
Well, keto is NOT about restricting your overall calories - that’s a recipe for starving yourself and, over the long run, messing up your metabolism. No, keto is about SUBSTITUTING those carb calories with fat calories. After all, you better get your nourishment from somewhere … right?
Now, most of us can completely understand your resistance to eating “too much” fat because it’s been drilled into us over the decades that this is dangerous to our health. (Our grandparents and their grandparents knew better than this silliness, but I digress).
Yes, if you eat saturated fats WHILE eating lots of carbs then those fats will likely circulate around and cause heart issues and other problems over time. But remember, you’re significantly restricting carbs, right? Well, without those noxious carbs, your body will return to its natural state - the state in which ALL of us were born - which is a state of ketosis. In a state of ketosis, those healthy animal fats we eat will get USED for energy and overall cell health.
So the context really matters. Eating carbs? …then yeah, loading up on fats may not be so healthy after all. But reducing your carbs per keto eating, then no, those fats won’t harm you at all… in fact they will prove to become your ticket to better health in virtually every respect.
In fact, a very common problem those starting out on keto experience (myself included) is holding on to our FEAR OF FAT. This is going to cause you problems if you don’t face it squarely and overcome it … you will otherwise not eat enough (or perhaps overload on protein, which may cause challenges of a different sort).
Trust the science. Eating healthy fats - when not allowing pesky carbs to get in the way - is healthy. And you need healthy food to thrive.
Hopefully some of this helps you begin to revisit the misinformation we’ve all been fed over these past few decades.