Welcome to Weekenders skyfullofstars! Congratulations on reaching day 3.
Sorry you are feeling anxious goodbyeevan. The only thing I can suggest is to keep (gently) trying to get him to open up about it a bit more. As a single person I do not have someone close enough that I can open up to but that has not hindered me so far so fingers crossed it will be the same for him.
I woke up with a mild headache this morning, I bingewatched the last few episodes of Swedish crime drama The Bridge last night which may account for it. It was excellent though.