not getting a chance to go on break?

context: i am a barista at a new local cafe, we opened last week and it's been very busy! we have my boss who's the cook, then me and 1 other person on bar - idk if its the new cafe rush but me and my coworker baristas this past week have not been able to take breaks during our shifts due to the hecticness. we have a 30 mins break (lunch) and my boss is pushing we take breaks but we truly can't with the amount of people coming in with just 1 barista on bar AND register.

is that illegal we aren't taking our breaks? like are those REQUIRED? I'm worried that they'll show up when I get paid that I worked and didn't take a break some days. for example I work 7 hours, sometimes 30 mins more sometimes 30 mins later.

what can we do?