The most successful Channels are ones where the content is both compelling and is regularly refreshed. If people like your videos, they’ll want to come back but will stop returning to your Channel if there isn’t anything new to watch.
So, should you load up all your new videos and call it a day? No, research shows that it is more effective to add videos at regular intervals than to do it all at once. You might even consider adding your videos on a regular schedule at first.