First time hearing about The World Between Us. Seems very interesting ! I'm trying to get into The Untamed but…
For me the story after the flashback is better (33-50th ep) it's the point where you actually binge watch. If you're not that much into wuxia like me it's weird. I had some questions when I got to the middle of the drama but they got answered eventually. But look, I would understand if it's not your cup of tea, it's ok even if you decide to drop it at some point.
A thing I do that I believe is not that helpful but Ill tell you anyway, watch dramas that are currently airing and because they air 2 eps a week it isnt harder to watch a drama. I know there are new dramas that you dont want to watch or they are not airing right now but I thought I would share this tip