This is happening to me and it happened before.

I texted her 1 day after getting her number, she replied like 30min later, which is good. But then I overthink things and reply back hours later, then she replies hours later. Then it gets to the point where we're saying so little to each other.

It's like I hesitate to show strong fast interest, so I reply slow. Then she sees I'm either playing a game or not very interested and starts replying to me slow in return. It kills the vibe.

You know what I mean? Sometimes I am genuinely busy and reply the next day instead of at night, but then I feel she matches my energy and takes just as long each time.

Obviously I don't want to be texting all the time, but I like to build some rapport.

This happened with another girl in the past... now it's happening again. This girl showed strong interest in me in person and now the texting is meh because it's slow even though she puts thought into her replies

I hesitated to reply to her fast because I think "She'll be annoyed that I reply too fast and she may feel pressured to reply back fast, so I'm better off replying 1-3 hours apart or even the next day if I'm genuinely busy".

How do I solve this? I wont be able to see her for like 1 month since I'm out of town, so im not asking her out yet. I got her number recently, just trying to build rapport, playfulness and flirt if she acts playful back