Decided it's time to go to Hyrule Castle. 1 shrine and memory to find, both of which I think are in there.
Resorted to a guide to mop up the final 10 or so shrines I couldn't find. A couple I had seen but hadn't located the side quests to activate them. Glad I did as some of them were super sneaky and they showed me a few areas of the map that even after 100 hours, I'd completely missed. Some of these final shrines were amongst the best in the game too. Can see the DLC showing my path through the game being interesting. Bet there are a fair few regions I've missed huge chunks of.
It really is a special game, isn't it? Not sure I want it to end.
Still have about 20 side quests and Tarrey Town to do if I like one day...