sock account for privacy

my boyfriend is a total introvert (INFJ) and needs a couple of days once a month where I let him be... I don't hear from him for a couple of days. We are in this phase right now (last time we spoke was 2 days ago). I trust him completely, I know he's not doing anything gross or degenerate...if i text him he'd respond right away, but I wonder how long it would take him to text me. I should mention I am ALWAYS the one texting first...and he's happy as a clam. I can't help but be a little curious about how long it would take him to text me. I'm an extravert and don't need alone time per se...(i need time for myself for work, gym, reading...you know...thinking). I guess I want to hear your thoughts on whether I should text him first? Or see how long it will take him.

TLDR introverted boyfriend needs time alone every month or so, I always text first...should I wait this time?