Time Gap between kids

Jessie

My son is 6 years old. I want another baby, and I’m currently trying with my SO but I’m low key worried about how my son will react. He wants a sibling, he’s expressed that but he’s also been an only child his whole life and he’s very cuddly and loving towards me. How do I know if I waited too long to have another child or if he’ll be okay with another child in the house?