To get rid of the "scale," the residue from oxyclean, you use a weak acid solution, Starsan works great, but you can also use a dillution of either vinegar or lemon juice in water.
When I am processing my bottles I fill one sink with whatever weak acid I use, soak my bottles inside and out with them for a couple minutes and re-rinse.
If you use starsan in this way, it DOESN'T COUNT as a sanitization step....at least I don't think of it that way, I still sanitize them on bottling day. It's only a step to remove the scale. And if I were using lemon juice it wouldn't sanitize at all.
You should never think of sanitizing ahead. You should really always do it at the point of use, be it bottling or brew day.
No rinse/wet contact sanitizer are double edged swords. Literally. They kill two ways. They kill everything on the object prior to sanitizing, and then as long as they are still wet they form a sanitizer barrier that kills everything that comes into contact with object.
If you let the sanitizer dry any micro organism that comes in contact with the sanitized object, rather than being killed by it,
makes the object no longer sanitzed.
I delable my bottles and hit them with starsan after I do so,
But on bottling day I still sanitize them again. There's no such thing as too much sanitization.
Listen, I can do my entire bottling process
including sanitizing my bottles in under an hour. So do a lot of folks.
I outline my process in this thread, along with other people, apply a few tricks and tips, and you'll have no problem santizing and doing everything else on bottling day.
https://www.homebrewtalk.com/f35/revvys-tips-bottler-first-time-otherwise-94812/