Well sure if you want to start the process you can start anytime you want, but you're not going to get accepted unless:
What is the minimum stock price for Nasdaq? $5.00 NASDAQ National Market (NASDAQ)
Initial Minimum Bid Price for Stock: The stock must have a minimum initial bid price of $5.00, and must later remain at or above $1.00.Jun 20, 2016
For example, the NYSE requires firms to already have 1.1 million publicly-traded shares outstanding with a collective market value of at least $100 million; the Nasdaq requires firms to already have 1.25 million publicly-traded shares with a collective market value of $45 million. Both the NYSE and the Nasdaq require a minimum security listing price of $4 per share.