You can try sending the missing Docs, but i guess, there is no file number for your application, so I am wondering how will determine these documents refer to which file, the kind of backlog they have I doubt if they will entertain it.. My initial application was June 2018 and they are returned my file in November 2018, as I was missing the Schedule A for my Wife who is not accompanying.
So it completely depends on the officer handling your file.
One of my friend was also missing a document, however, to her they only asked for the missinig document, did not return the file like they did to my file...