Firstly, I want to apologize for undoing an authorized user's edit.
Second, I want to mention that 25 January 2020 was a Saturday and that the episode on that day was E16 "Family Fishing Trip" / "Bizarre Bazaar" (https://tv.trueid.net/tvguide/all/2020-01-25), well in line with the broadcast pattern. However, I did not watch the channel broadcast to confirm the episode on 26 January 2020, which could have been E17 "Cursed!" / "Fiddle Me This" (https://tv.trueid.net/tvguide/all/2020-01-26), after E16 on 25 January 2020, instead of E1.
Episodes 17-19 were aired on weekdays during the "back-to-back" rerun timeslot on Disney Channel Asia. I didn't archive the schedule page. I believe it was not intended and it was supposed to be aired during February-March.
And thanks for sharing Indonesian dub, I also have episodes 18-19 in Thai dub.
Heads up, Astro SVODs are available 1 day after the official airdate, but since they accidentally aired last week, so we cannot cite that as a reference. ^^
DC SEA now and then always have updated schedule at some time after the first published schedule. It seemed weird that the earlier schedule doesn't include the last 4 episodes but later updates include them. It must have been convenient after the episodes were ready for broadcast.