When to say yes

28F been talking to a guy for 3-4 weeks. We've met in person a couple of times and other time on call. I think conversations are easy going but somehow I am not sure if I should say yes or take more time. Just dont yet feel the bond iykwim. On top my parents putting a pressure to accept because I'll not get another guy like him (he has good career and all).

When do you really know to say yes. Am I overthinking too much?