To early?

Jennifer • 24 . I'm married 10/14/2023. Baby girl born 6/13/19. Baby boy born 6/6/24.

I’m 20 weeks. I’ve bought a few baby clothes and a changing table. I want to buy more. Is it to early? I have my gender party tomorrow. I’m so excited! I just want everything ready. I want to be prepared. My fiancé says its to early. Is it?