Baby #2

I have been weighing the pros & cons of having baby #2 for a while now but I keep talking myself out of it. I know you’ll never be fully ready for another baby, sometimes I feel like I’ve already waited to late but I really want my son to have a sibling. He will be 3 in March 2023 so I’m just trying to get opinions on how an age gap is between a newborn & a 3 year old.. some people are telling me I should just wait to have one when he starts school @ 4 but I just don’t know what I should do. I’m already a stay at home mom with him so I feel like I should just knock it out now.. thoughts?