If you’re refreshing your messages all night for someone who replies in two days, the answer came already.

Waiting up for a reply that takes two days is exhausting, and the tiring part is not the waiting. It is the hoping, then talking yourself down, then hoping again. Meanwhile the pattern has been steady for a while, which means you already have your answer and are hoping the next message overrules it. People who want to talk to you generally find a way.

Stop being available at every hour to somebody who is not. Leave the phone across the room at night and let the reply find you tomorrow. Give your evenings to the people who are actually in them.