Should I double text?

Hi!
I’ve been having a really long conversation over past week with a guy on Hinge.
He’s just my type on paper.
He is currently in USA for his graduation ceremony and packing up before returning back to the UK permanently.

On his first day he did say sorry for his slow replies and wants to reply but could not reply.
He’s not got back to me from Saturday 4am – and it’s now Monday – I know and appreciate he’s busy – but as an anxious attachment style I’m getting worried but that’s a me issue I know.
It takes about 45-60 mins to reply to our in-depth convo we’re having about everything and he said when he’s back we can meet up for dinner and drinks.

Should I give it until tomorrow and send a check in “hey hope you’re well, I know you’re busy but just checking in and hope you’re having a good trip” or something else? Or do I just leave it?
I don’t think he is ghosting me, or maybe he is – but he wouldn’t he have blocked and removed me by now…

Please help! I don’t want to come across needy but also I would like a reply 🎃

I’m working on my anxiety in therapy but don’t see my therapist until tomorrow. This is way more to do with my abandonment issues but how do I navigate this.
Thanks a lot.