Read the book ‘The baby decision’. Have him read it too.

Put a timeline on the process of deciding and try to stick to it. Together

Decide what’s most important to you: a ‘perfect’ life, pragmatic and all, no kids, and all that comes with it, but maybe without your partner/ soulmate. (But maybe with another person whom you’ll love equally). Or a less ‘perfect’ life (maybe) but maybe still happy with a kid and your partner/soulmate. You need to make a guess if you can be truly happy with a kid and your current partner. If the answer is yes, I would say, stay with him.

The argument that you need to be 110% sure you want to have children before you have them is somewhat flawed in my opinion. A LOT of people were accidents, a lot of people were on the fence (50/50, could be happy with either) and ended up happy with a kid, etc etc. Also, some people do regret having them... So it’s a hard decision I understand. I think if you’re at least more than 50% sure you want one (yes, 1 is also an option) AND your partner really wants one. You’ll probably be good and will become happy, no heartbreak and what ifs. That’s seen from the couples perspectives and not the individuals.

I think for me personally I’d just value my relationship and life with my SO above having/ not having a kid. Which you can only do if you know you’d be truly happy (maybe not the same amount, but still) with either decision. So you need to find that out, and that book will really help. It did help me!