There is no way to explain away the 1914 doctrine 77 week prophecy from 607, other than to admit they got it wrong.
So, their solution has been to NOT address it. Just like they have never addressed the "fact" that the "creative days" were supposedly 7,000 years each. Science has clearly disproved that crap, so it is simply has never mentioned anywhere in the publications for many years.
In the same way, they will skip any mention of the erroneous 607-to-1914 calculations (that no one could ever remember anyway) and simply point to HOW TERRIBLE everything is and quote 2 Timothy chap 3 and the "signs" of the Last Days. Noah's time of warning about the coming Flood was 120 years, so they can still casually refer to 1914 for another 10 years. That gives the old guys time to die and not have to deal with a "fix" and it gives the young guys 10 years to pray that "some kind or any kind of" Tribulation hits (like Covid-29) and they can play that up. Or maybe even Armageddon will FINALLY come and bail them out.