Dissolving an S Corp in the middle of a year

Hello. I just filed 2019 tax return on 1120s through TurboTax Business. The S Corp was formed in NY in 2016 and I want to dissolve it since I lost all my clients due to this virus outbreak. I moved to Florida and it is not possible to transfer the company, I want to start fresh with new business name and look for new clients. 

How can I dissolve that company? Should I file a 2020 tax return now or wait until next year? Can I do it through TurboTax?

 

Thank you