Email notifications to participants

I have scheduled a webinar and shared the registration link with my network. 

I've now found out however, that all those who registered receive an email notification whenever I change anything about the webinar. 

Of course, I'd want them to know about changed times etc but not every small detail or setting that I might change. 

How can I (temporarily) turn off these email notifications to my participants? 

Thank you for your help!