Telling parents..

Hey all! I’m 5 months pregnant and just needed to rant. So my family knows and they’re so happy and supportive. My SO will be involved in our child’s life and we will continue our relationship, but lately I’ve been so frustrated with him. I respected his wishes for him to wait to tell his parents, but baby is due in 4 months and he is still postponing it and making excuses. I feel like I might have to end up telling them myself. It bothers me so much because it’s excuse after excuse and I don’t even know what to do anymore and I’m tired of arguing over it. I understand that it’s scary to tell them, I was terrified to tell mine... but yeah. Any advice would be great, please no judging.