Zoom Webinar License Expiring but have Scheduled Webinar next month

Hi all, I purchased the one-month license to set up my registrations for a scheduled webinar on 19 September. My Zoom Webinar license is expiring on 11 August. Can I only renew my license closer to the webinar date to regain access to the registrations and start the webinar? I don't want to renew now and pay for another 2 more months because the expiry date is only a few days before the webinar date. Please advise.