I begun as a kid so I cannot comment in a meaningful way since I mostly forgot everything from that time - but here is one thing that I never could forget; when my playing took off on it's own.
I adopted a simple fret by fret exercise for limbering up the fingers - migrated into a chormatic scale from outer to inner strings and then to variations.
It became necessary when I found it hard to fret inner strings because I would place the fingers too far from the wire! Anyway later I discovered that keeping an even tempo and missing out fingers made scales or parts of them - occasionaly little tunes as well.
This is not for everyone but it could save some a long haul of trying to figure out the fretboard rather than just feeling it as they would later do.
There is no substitute for a Tick Tock and I really must emphasis that, even if you are just playing Red Haired Boy or some other Hoedown. Even tempo can turn a slow practice into magic.