Unable to see the changes in vs-code for second site

I have one project which had one site. I did some changes in vs code.
After that i created new site and did bench use new site. And added some doctypes in the second site. But unable to see those changes in vs-code now for second site.

make sure your developer mode is on

Yes it is on. But not able to see the doctype which i created in my second site.