The Art & Science PM Interviewing
Some of my clients have found the following (notice paywall) approach to PM interviewing helpful.
What I like it
They advise a lot of what I suggest. I particularly like their point about using the time limit acknowledgment as a reason to pick something am move forward rather than trying to exhaust every option
Why it might not be enough
I augment these suggestions with examples and drills. Many find the direction advice helpful but need more specific help.
Generally Speaking
I find the free part of most of these videos helpful, if just to see they say the same thing I have been for years.
The advice is more specific to Meta than Google but is helpful for both generally.