Family not understanding

I just wanted to rant about the frustration I feel with being recently diagnosed and struggling with navigating the food world. I'm a poor college student working part time, and most of my cheap foods were carb heavy. Having to drop them all has really upset me, and It doesn't help that when I express my frustrations to my family, they just say things like

"you can still eat them just in moderation"

A fucking whole wheat sandwich sent me to the hospital 😭 there is no moderation there, what am I going to do eat half a slice of a bread a day? Whats the difference at that point.

Anyone else have struggles related to family and their understanding?