"I can't seem to find a way to search past questions"
The Search function on this website is well hidden. If you're on a desktop computer and your browser window is in landscape orientation: look at the top, near the center, to the right of the dark blue Rick Steves logo. You will see a magnifying glass in light grey and the word "Search" in faint blue. If you're on a tablet or phone, or your browser window is in portrait orientation: at the top left you will see a bunch of horizontal bars. Click these, and you'll see Search at the top, above the blue "About Rick" line.
I often find searching on Google easier. To do this, put your search terms into Google; for instance, if I want to find one of my past posts, I might look for "Harold Italy gluten free" (without the quotations). This will bring up an avalanche of results, which I ignore completely. Near the top (under the search bar and above the first result), you will see the following choices:
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Choose Settings, and then select Advanced Search. Put in community.ricksteves.com to search this Forum, or ricksteves.com to search the whole website.
As to your question, I can only say I saw the Vatican Museums in September 1994, and even then, the crowds were so great (and so tense) as to make it impossible to enjoy. If I ever go back, I'd gladly pay whatever it took to see them early or late, away from the crowds - or I wouldn't go at all. That's how miserable it was.
In addition to the Dark Rome and Walks in Italy tours, the Vatican Museums website has early and late tours: http://www.museivaticani.va/content/museivaticani/en/visita-i-musei/scegli-la-visita/visitatori-singoli.html