Feeling inadequate

Hi mommies, My in-laws are making me feel inadequate all the time since I m formula feeding mostly. My LO is 6 weeks old and I m trying my best to breastfeed her but my supply is so low I only make enough for 1-2 feeds. My in-laws keep taunting me that I m not trying hard enough. It's already so hard to juggle everything and such comments on top make me feel so bad and as a failure. They made a comment that it's like giving McDonald's vs home cooked food and that triggered me a lot. My baby is happy and fed and I give her whatever bm I m able to make. Isn't being a happy mom more important than killing us over trying to breastfeed??