- During the fasting I don't take the Fish Oil, I haven't read anything about it specifically, but just assumed Fish Oil was fat that would break the fast. Do you have an opinion on that?

A fish oil pill has around 14 calories and most of the times will break your fast -> Take it after your first meal.

Vitamin D is a fat soluble vitamin and you should take it only after a meal containing some fat. Taking it while fasting will just not be absorbed.