Hi
While the ratings were pretty low this week, there's nothing to panic about yet. The 2017 line-up had a solid first week, and the second week it out-averaged the rest of the Adult Swim line-up in the 18-49 demo. Nothing is going to change after one night of low ratings, where even Family Guy couldn't break 1.4 million and a 0.6 in the key demo.
With the news that Samurai Jack is coming back in March at 11:30, it looks like they've got plans to expand Toonami. The expected move is to move DBS to 11:00, put Jack at 11:30, and leave the rest of the line-up. They may also be airing Jack at 8:30 because they're planning to put encores there.
Now, if the low ratings continue and Toonami consistently does worse than the rest of Adult Swim, then I could see plans changing with DBS and everything else getting bumped back, but this one week of bad ratings all around isn't going to cause that change.