Hi, maybe you skipped this lesson ?
https://www.guitartricks.com/lesson.php?input=22166&s_id=1781
Lisa explains how to practice, and I found it very useful.
Brief summary :
- 10 minutes spider legs warmup
- play something you can play 5 mins
- practice what you need to practice, seriously (15-40 mins, depending how much time you have)
- play something fun and easy
- end of the practice
- repeat everyday
The only real failure is the failure to try.