When you last talked, did you ask for a time frame for responsiveness?
- If he still within it the time frame? Wait.
- If he's beyond it -- he is either not into you or not willing/able to be timely to meet your need for responsiveness within a time limit. You could check in or let it go cuz he's not sounding compatible.
- If you never asked for a time frame -- could learn to do that so next time you aren't in limbo like this again.