Am I the only one...

I now have a 4 year old I breastfed him almost 3 years my family always put me down about me breastfeeding him to the point that i had to lie and say he wasn't anymore when he still was...

Fast forward to now I have a new born baby and I'm planning to breastfeed him as long as he and I want and my family already started saying that my breast milk isn't good enough for him that I won't fill him up that I should give him formula instead.

It makes me feel so bad

I don't understand why they can't understand that we are fine