Family not respecting pandemic wishes of no in person/inside visits?

Anyone else out there having issues with family who keep asking to hang out? We have made it crystal clear we aren’t comfortable with it. I’m high risk being pregnant, and my husband is also high risk bc of a health condition. It’s really driving me nuts, and I know it’s going to get worse. We said we are fine being outside, six feet away, with masks on. Every time my dad makes comments like, “I cannot hear you with your mask on,” or he takes his off, or inches closer than 6 ft away. To make matters worse, my younger sibling and partner are pregnant and due close to us, and they go inside my parents house and vice versa. So I know we are being compared to them. My sibling keeps saying if they isolate for 7 days, it’s fine, but wants to do what we are comfortable with (if that’s the case, then STOP asking)... how MANY TIMES do we have to say, NOT inside, social visits only outside, with masks on?! It’s exhausting. Our doctors support and agree with our decision, UGH. This pandemic and being pregnant is not a fun combo. TIA. Any suggestions?