1. Play Hot Cross Buns with two hands.
2. Play old songs but look at the paper while you play. Try to keep track of the notes.
3. Check out these music notation work sheets and try to do the first one or more:
The above links are from this website, which also has some cool activity sheets and music coloring books for sale if that interests you: https://makingmusicfun.net/htm/printit_notename.php Just make sure you pick treble clef.
4. Rhythm Videos:Try these videos then try to say the rhythms from the paper without the video.