LDR with doc in NYC during covid

I met this amazing guy on a dating app. I live in FL and he is in NY. We met in NOLA at margi gras. It was my birthday and we had one day together and he invited me to hang with his group and told me to bring my mom and brother along. That evening he was very persistent to take me out for a glass of wine and we did have the evening to ourselves. Had an amazing evening. Ended with being intimate. After we both went our ways and I had to fly back at 4am the next morning. We continued to talk pretty much every day up until about 3 weeks ago. He is a doctor in NYC. Was working a 9–5 research job and then started picking up shifts overnight during pandemic and still working on his research.

Our conversations were intimate in more sexual and simply chatting. I knew he was smitten my me. He was so great in so many ways and I felt a mutual desire for each other.
I was supposed to go see him, which got cancelled. He almost flew down before getting called into work.
He began saying sorry just got off a shift, or sorry I’ve been mia been working all weekend. Telling me how hard it is switching for night to day shifts and work.

3 weeks ago now.
The last week of us talking he even said “I obviously want you here as soon as it seems reasonable” (Monday)
The last conversation (Wednesday) he told me his roommate came back after a month of being gone and got laid off and not sure if he can stay there anymore. He kept saying “its been quite the time” I think this was his last straw and he was feeling overwhelmed.
I think I became another obligation for him to reach out and make sure I knew he was still thinking of me etc. but I think that may have been too much for him.

I reached out the next day and said I hope his day gets better and wish I was there to help.. no response.. for all I know he was working and just had no energy to talk back.
Monday 2 weeks ago comes along and still nothing and I said “hey thinking of you, hope you are doing ok” and nothing.. which was not like him at all.
Tuesday I was honestly worried.. he was sick.. something happened.. etc.. I called and left a message checking in and wanted to make he was okay and hanging in there bc I could tell he wasn’t his same self.

he responds wednesday “Hey there. Yes. I am doing okay. It’s been quite a time here. I am just getting home from another shift. Sorry ive been MIA. I didn’t mean to have you worried. How are things going down there?”

I respond with “Hey, it’s a different world. I’m here if you need to unload. Miss you and glad to hear you’re okay.”

I can see he needs space and cant handle a relationship right now.. no other obligations are needed on his plate. but he was so great and our chemistry together was undeniable.
He was so close to booking a flight to see me before he was going to go back to his family in nola but getting called into the hospital changed everything.
There was no more end in sight. NYC is still closed and I see him look on my stories on instagram but he hasnt said anything from my last message which makes me realize he needed space and not a relationship right now.

Too much on his plate.
I fear that every day that passes he feels guilt of not reaching out and thinks I’d resent him more it and he has not reason to apologize when hes going through what hes going through. i wonder if he thought I moved on. or if I’m even thinking of him.. but I reached out enough that I was there for him..

I dont know if I should reach out 3 weeks after that message with a light hearted, thinking of you etc for him to know I havent moved on.

He was the first guy I saw purity in.. he was so genuine and funny and sweet. I know it was just a short period of time but during that time we were both so smitten with one another.

HELP