I’m not sure what you mean by clarity, but MANY people do not “know” right away, or even after a few dates, and as aries described it’s a gradual process. Even after getting engaged, a large number of people, if not most, have moments of uncertainty, which is totally normal, and assuming they are not specific concerns and issues, are usually par for the course!
A suggestion: perhaps instead of davening for “clarity”, which is not necessarily a real experience, daven for the siyatta dishmayah to make the right decision, which is really what you are looking for.
Hatzlachah!