For larger projects like book translations, I always set up special GPTs (customized ChatGPTs) which are informed about more background and use it as my separate "Companion". And I try to paste longer sequences of text into prompts and chats, so ChatGPT is context-aware (this will be much easier with the new memory feature coming to ChatGPT and GPTs).

I usually use the context-aware translation of ChatGPT to compare against NMT (Neural Machine Translation) and AIP (AI Professional) translations within Trados. But shouldn't we have the context-awareness within Trados as well?

If you need more detailed input, I'm happy to help in any discussion. I believe it would be possible to attach special GPTs (with memories) to projects and ask for the translation of a segment in the context of whole chats (project- or file-related) and the upcoming memory capability.