To text or not to text?

Trying to gain some of that good stuff called confidence. Been trying out that “cold approach” thing. Worked pretty quickly and got a gals #. We made plans to go out for lunch Monday. But should I try and have an active convo w/ her over text? I’m always overthinking like if I just wait till Monday she’ll forget about me. I’m not the greatest texter. What are y’all’s thoughts?