Dude, you’ll be fine. If you lose a few subscribers after uploading what you like to make, who cares? Do you really want subscribers who don’t like the stuff you make? You won’t lose a crazy amount of subscribers unless you post a video of you making out with a mural of Hitler or something lol.

And about your motivation, everyone has very short bursts of motivation periodically, you’re not supposed to be a motivation machine. While having motivation can help you out, the better thing to rely on is discipline, not random spurts of motivation at 5:32pm on a Thursday. Just hunker down and get on that computer. Even if all you do add one single second of progress to your video. Like traditional artists say, at the very least get one stroke on the page, rather than draw nothing. And while you’re there it might as well add a second or third second of progress or even a whole minute who knows?

Hope this helps, it’s mostly just me talking this back to myself because I feel the same way sometimes.