It could take 6 months or more, Generally 30 day's after the stock trades under a Buck the Exchange Sends a warning letter that is to be made public, After that the company has to file a plan to get back to compliance, Then the clock starts ticking.
If you want the info look up rule's..5400's,5500's & 5800's on the NASDAQOXM...listing requirements
Anyway we should be getting a letter soon and that is never good for stock prices.