Unable to continue chat with ChatGPT 4-mini when 4o is on cooldown

Using ChatGPT on the browser, but I think it’s the same for every free version: When you’re chatting and ChatGPT 4o enters the cooldown, you’re usually stuck with ChatGPT 4-mini, and that’s fine, but if you have one of those collaboration documents it doesn’t switch and you have to create a new chat or wait for the cooldown. Why? Just give me the ability to not use the document or to delete it and continue chatting…