Try to keep it practical (like something that would be fairly doable, you just havent gotten around to it…yet)
There are apps that you can input text into and they can replace the characters in each word incrementally to help learn them. Wanna get into that
Good catch, I didn’t realize all intervals were 5ths. Well the order is fine by me, it’s a song in and of itself so it’s very easy to remember. I guess the minimum you have to know is the start note (Si or Fa)