Breastfeeding vent

I absolutely love this time with my son and how it keeps us connected to one another, my son will take a bottle as well, I pump so daddy and grandmas can have some time with him too... But my MIL has made snooty comments about how my son cries every time he finishes a bottle and that she can't calm him so she gives another and I don't give her enough milk... I gave her a schedule, She baby sat for me twice and it was an issue to the point where she made me question myself as a mother , as though I'm depriving my son of a meal... It was hurtful& I felt so disrespected having to explain myself to a woman who had one child 23 years ago and couldn't remember how to change a diaper correctly 🙄 it's just a sad feeling when you're doing your best as a mother and someone has to put their uninvited opinion in