So I FINALLY managed to get the entire High Sierra OS installer to download... it's 5.24GB, version 10.13.6.02.
I thought I'd download Mojave as well in case I do want it but that one only download an approx. 24mb installer to my Applications folder and says to set up the OS installation to click continue. I seem to remember "something" from somewhere about what to do to get the entire installer as I did with HS. For the life of me I cannot remember how to or where I saw the instructions now.
Would be ever so grateful if anyone happens to remember or knows where to find that info...