what might be re-occurring is your body dumping toxins and releasing that into you and it has to handle it, and many can easily feel tired, icky and all that stuff.
so if one ‘picks a carb limit’ and holds it, yea you could be experiencing just ‘different times your body’ is adapting thru the changes you did make.
I was extreme low carb for like a year easily…then I walked into carnivore for like 7-8 months and felt fab.
boom…like 2-3 weeks I was so tired I could not move a muscle. I got brain foggy again, sleep went off and all. I had no clue??? I was so FINE and then down I went.
I held plan firm. I slept naps all I could. I just powered thru it all and woke up one morning in fine shape. No clue why any of that went down at all…so???
take what ya can from my post LOL and I think you hold your eating great as you are…work thru the ‘down crazy times you can’t quite put into a known category’ and be sure to eat clean and well.
I think you will find you sweet spot of it all soon. I think it is adaption, body healing doing its’ thing……………as long as you ain’t eating binge days of crap and then re-starting again and things we just don’t know from your post?
the ‘pretty steady’ at less than 60 per day…what are the real fluctuations of that and the real menu behind that, we don’t know so…
and if you exercise truly a lot…you might not be getting enough protein, the body has to take time to repair and heal muscle etc…another so in there LOL but you know you and hope all things come together for ya!