Discover Weekly broken overnight

[9-8twmz_94gtt]

 I use Discover Weekly every week, and it's been fantastic for 1-2 years.  I've explicitly liked ~200 songs, and Discover Weekly seemed consistent with those songs.

One day, my 7-year-old daughter was singing along with a Disney song, and accidentally left the Android client playing suggested songs after that for a few hours.  No one clicked "like" on any songs, it just played for a couple hours.  Maybe 20 songs played.

Now, instantly, 100.00% of my Discover Weekly feed is Disney songs.  100.00%.  It's as if I liked all of those, or as if I hadn't explicitly liked 200 songs that aren't Disney songs.  It's been about 1.5 months since this happened.

Is there a way to reboot my Discover Weekly to just respect what's under "Songs" in my library, i.e. all the songs I've liked?  Or to reboot it to its state at a previous date?

Spotify is almost useless for me without this; I use it just to be surprised by what comes up and play along on my instruments.

Thanks!

-Dan