Retail will be locked up for a couple weeks
the only ones selling will be insiders and lenders. Usually on a reverse split, that's how shareholders get hammered. They have stock with little value that they are prevented from selling.
So to answer your question. It depends. You get a couple players competing to get out the door first. It'll tank fast. If they manage their exit with some support from the company, it'll be quick.
A scam I follow, WWIO, hollywood CEO scammer like this one, went from R/S to .0001 in about 2 months.
#1). You have money. Other people want it. All of it!
#2). You want easy money. So does everybody else. They'll get it, too....yours! (and all of it!)
#3). You tell yourself you're smart. You won't lose your money. Fact: Other people are smarter,