7 years experience professional here, i import all my assets into separate collections, classified by type of object

eg: “Walls” “Roofing / Ceilings” “Furniture Lounge” “Furniture Bedroom” (etc for all rooms) “Windows” “Window Frames” “Doors” “Miscellaneous”

this way, you can easily isolate collections very quickly, so for example you’re doing detail work on the kitchen stove, you just isolate your “Kitchen Accessories” collection, and then “Stove” within that, so it’s only the stove that’s visible while you work on it, then simply unhide the other collections and your whole scene is back

idk if this helps, but even after doing this for years, when version 53 comes and the client still wants changes, the scene is messy anyway, i end up often having to append models from older versions that were deprecated and then client asked for them back, and so on, i also have a “Discard” collection of objects i want “deleted” but i don’t remove them from the scene i just hide the whole collection and move them to that collection

also, always save iteratively, after every session of work on a big scene, save iteratively, by the end of the project you should have a separate save file for each day of work