Calculating macro's.. when to adjust?

ellexesse

I'm starting to count macro's tomorrow as my weight loss tool, however I'm curious as to how/when to adjust them? I have an online trainer who provided me with my numbers for the first 2 weeks of her 30 day program however, I'm unsure of how I'll continue without her. How often do you re evaluate your intake? I'm sure as I lose weight, if I were to use an online calculator the numbers would change each time, so how do I know what to stick with? TIA