I get the impression the OP has cut out most carbs and has seen some excellent results. What on earth is this blanket "4 hours between meals" nonsense and what does it have to do with the topic?
I'm interested as I've also been taking Vit D3 4000iu/100µg tablets for years (not every day, more like 5-6 per week) and have slightly elevated liver function results. My GP says it's likely to be due to high BG - my initial HbA1c was 113 - but has agreed to test my vit D levels when my HbA1c is below 70. I'd feared I was still low as I almost never leave the house but having read this thread perhaps I'm now too high? Good to know that it's an easy fix if that's the case!