I've done LCHF for most of the past two years, as it seems to work best for me.
My opinion, for what its worth, is to get stuck into it from day 1 - by that I mean totally eliminate carbs, rather than try and cut them out gradually.
You will probably feel like crap after the first few days, and training will be a real struggle for a fortnight or so, but then you start to adapt to the diet and things get better. Before long, you'll not need much sustenance before or during exercise.
For me, when I exercise in a morning, I generally go before breakfast, and can quite easily run 20 miles on an empty stomach (barring being injured, as I am presently).
I have found that I now enjoy my food so much more as it has forced me to really think about what I am eating. I make/cook meals from scratch almost every meal now, and I like the fact that I know down to the last seed what I am putting in my mouth.
I manage to get most of my fat from avocado, yoghurt, cheese, seeds and oils (coconut oil, olive oil etc), and less so from meat.
I eat a lot of greens, lots of vegetable, but barely any fruit.
I am also quite partial to the odd bag of pork scratchings, and almond butter is on tap at my gaff.
There are quite a few good sites around if you want recipes etc (dietdoctor.com, edify.com etc), or just go to Pintrest and type in LCHF or Banting, and you'll find all you need.
Oh, and for every person you speak to who likes the low carb, high fat thing, you'll find at least two or three who think it's crap and that you're daft to do it.
Now if I could just work out why it refuses to register steps. Not that I'm bothered about steps - (but obviously I am....)
Have you got "activity tracking" in "settings" set to on, Cougie?
I'm getting narked with mine at the moment, as quite often after completing an activity when I go to save it, it just hangs on the saving screen. I then have to do a hard reset, which subsequently deletes the activity I've just done!