Hello, my name is Humberto Valle, I'm an international strategist with over 10 years experience. My skillset has revolved around marketing and product market reach but I have vast experience with your topic, I believe I have also answered a similar questions to this one before.
In short - you must file as often as required per your state plus the federal. If you have to claim $0 revenue, net losses - do so. If anything it benefits you, as investor. Go talk to a cpa for further advice, also with s corps make sure to record minutes for any changes or efforts made on the companies behalf. Sometimes they are needed, sometimes not.
Good luck, and talk to a cpa directly.