Why did he stop initiating contact? Is he ghosting?

Anonymous
I’ve been texting this guy for over 3 months. We saw each other once before lockdown and we’ve FaceTime a couple of times and got naughty twice. The other day I told him it was going to be my birthday and he said “sending you lots of love wish I was there to hug you” and I told him to save the date and he said “I SHALL”. The day came, he watched all my ig stories and said nothing which I thought it was really odd. Then he texted me 4 days after my birthday, a week after our call.
He texted the following:
“How are you? xxx Did you have a marvelous birthday? 😃😃😃”

I took 7h to get back to him and texted:
“Well it was almost a week ago... yeah it was a great day”
And then he said:
“Sorry I missed it. But last week I found my old piano teacher is in hospice and I was a mess...” (he’s kind of a famous pianist so that’s why)
Then I found she’s in hospice but she won’t be getting better, she’s going to die.
Nevertheless I think he could’ve send me a short text on the day given he watched all my ig stories as I remember he posted a story on that day too at a wine taste event on zoom lol.

He keeps watching all of my stories but it’s been 2 weeks since our last conversation. Why would he stop?
Updates
+1 y
We were even planning on meeting up soon before the lockdown ended! He was going to invite me to his place or meet at the park. Also why would he come back a week later to acknowledge my birthday and then disappear?
Why did he stop initiating contact? Is he ghosting?
5 Opinion