How to force Google to consider the desired page as canonical?

Question

Search Engine Optimization

I have a site that was moved from http to https with a 301 redirect (Type: HTTP header). Everything works on https, everything is ok. But the google search console shows that part of the https pages are marked by Google as a mirror, and the main pages are http. I read support.google, it says that pages with https are preferred + the canonical page can be assigned by specifying a 301 redirect as one of the ways. What is wrong in my case, how to make Google index the correct pages?
rel= canonical is not registered, it seemed that if there is a redirect, this is not important. Or not?

Answer 1

rel= canonical is not registered, it seemed that if there is a redirect, this is not important

Everything is correct.
How long has it been since the move? I think that's the point. Especially if the site is large. It's just worth the wait. Did it affect attendance in any way?