I'll leave you (Text message)

Question

I texted my friend and said:

Hey, are you free to talk?

He said:

Sorry, I'm working on my science project.

I said: OK, I'll leave you.

Does the highlighted sentence sound correct and natural in English?

Answer 1

You could use

I'll leave you alone [for now]

I'll leave you be
or
I'll leave you to it

"I'll leave you"
is not hugely wrong, but it does have hints of
"I'm packing my bags & moving out."