Yes, I think it is a good idea to move on because the quality of shows can decline if they drag on too long.

DS9 is my favourite Star Trek series. I'm not a dedicated fan of Star Trek but DS9 was a good one. I particularly liked the relationship between Julian and Miles- they couldn't stand each other when they first met, but by the end of the series they couldn't do anything without each other!😅 Great writing.

I also loved Babylon 5, also set on a space station, did you watch that?