Don’t know if I want another baby

Hi ladies

I currently have 2 boys who are 2 and 7 from previous marriage.

My new partner also has a daughter who is 16 months old

My partner really wants a baby together but I’m just not 100% sure if I want anymore. My reasons for not having more is that I’d have less time with my boys and I don’t want them to feel pushed out, is that silly? Also we’d need bigger house and bigger car which we could afford but I’m not sure I want to stretch ourselves financially.

My oh sees his daughter every weekend but I understand why he wants his own child that he gets to live with every day.

Has anyone been in similar situation?

I’m 35 now and I don’t want to be much older If I’m gonna have another. Feel a bit like it’s now or never but dunno what to do x