I've been learning due to covid as well! I would add earpeggio and music tutor for iOS (not affiliated, there are other similar apps). It's basically a Duoling

I've been learning due to covid as well! I would add earpeggio and music tutor for iOS (not affiliated, there are other similar apps). It's basically a Duolingo-like way to get used to reading sheet music and ear training respectively, you just put in 5 min a day and in a matter of weeks you're able to read sheet music relatively well.