Yes, you had everything very organized but sometimes the urgent thing wins the important thing and that has consequences.
The first of all is that, for multiple reasons, you have started to run out of hard drive.
Video work generates a large number of files and, in addition, they are large files. You have numerous versions of the sequences, patches with names like “version1”, “finalversion”, “finalversion2” and so on.
During the development of the work, in the rush, you have not dared to do cleaning due to the fear of losing a fundamental file and now you are surrounded by a certain chaos.
My recommendation is that you do not touch anything, absolutely anything, until they have passed, at least two weeks since you delivered the work and your client gave you feedback that everything was fine.
It is very likely that you have to make some changes and if you go to do cleaning maybe you delete something and get your hair out.