When you upload a YouTube video, you can decide whether the video will send notifications to your subscribers. Viewers get a maximum of 3 upload and live stream notifications from each channel in a 24-hour period. If you upload more than 3 videos in a day, you can disable some notifications to choose which videos have notifications.
Disable upload notifications
- Sign in to YouTube Studio.
- In the top right-hand corner, click CREATE
Upload Videos
- Select the file that you'd like to upload and enter your video details, then click SHOW MORE.
- Under the "License" section, uncheck the "Publish to subscriptions feed and notify subscribers" box.
Upload Videos 
Subscribers won’t get notifications or see your upload in their Subscription feed. On the “Bell notifications sent” card in YouTube Analytics, you’ll see 0% bell notifications sent.
It’s not possible to disable public live stream video notifications. However, unlisted live streams will not send notifications.