How to ship to Amazon a branded product before brand registry

This feels like a very common scenario but feels very clunky and confusing. I am a new Amazon seller wanting to sell a new brand, and I’ve already obtained a trademark, and have my branded products now. I just applied for brand registry.

I want to list my branded products so that I can send them to the Amazon warehouse. But in order to list under my brand, I have to wait until the brand registry is approved first. I would prefer not to wait that 14-21 business days, since it’ll take another week for my products to be shipped to amazon and another maybe month for them to process it.

So what should I do? Do I list my products under Generic, and then send my shipment, and then switch them to branded later on? (Is there an easy way to do this?).

Importantly, is there a way to list my products WITHOUT it “actually” listing, so that I can just send my products to Amazon first (without it ruining my stats since I won’t be able to sell during that period)

I’m also worried about the new seller benefits activating as soon as I list my products. Since the time is limited and it’ll be like a month before I can actually sell.

Any help is greatly appreciated. Thank you