Fat metabolism comes from low glucose/insulin level. If you can decrease the insulin level or you can guard it to couple of hours in a day, you are fine.

Leucine also spikes the insulin level regardless the source, it is better to take it with fibres and a bit of fat, e.g. avocado.

If you still struggle, you might give a try to a constant glucose monitor (GCM) to see what crosses your efforts.