Can someone give me advice?🙏🙏

I'm due Aug. 1st with mine and my husband's first baby. We both discussed and agreed that unless we needed help we want 2 to 3 weeks of time with just us and our baby to ourselves so we can figure things out, bond and get on a routine. I tried to let my parents know that was our plan and they immediately got upset and were really calling us selfish for it. My mom even mentioned missing first milestones even though they really aren't hers. I know everyone else is probably going to be the same way. Any advice on how to handle this??