Increasing Streaming Upper Limit for University-Level Teaching

Hello! I'm currently working as a Teaching Assistant at the University of Hong Kong. Owing to the pandemic, the course I'm teaching will be taught online. Our class size is 120. My supervisor and I were wondering if there is any way, including paid options, for us to increase the stream audience capacity to 120 so we can teach on Discord instead. I am a frequent user of Discord myself and I would really like to promote flexible teaching over Discord. Thank you! :)