My suggestion would be to either focus the plot on Maul or Mandalore. I made an edit based around Maul in TCW (pre-Season 7), and it only included the Mandalore episodes when absolutely necessary. There was a 10 minute trim of Voyage of Temptation just to establish Obi-Wan and Satine’s relationship, but the rest of the first half was all Maul and Savage episodes.

So my suggestion is either focus it on Maul and Dathomir, only bringing in Mandalore and Death Watch when they are relevant, or focus it on Mandalore and have Maul only show up around when Death Watch finds him.