Buy "Standing in the shadows of Motown" and learn it through.
Use a looper to get instant feedback of your playing.
Stand in front of a mirror and try to improve your ergonomics, and playing technique. Try to push the string behind a fret to get a consistent sound. Light touch improves your speed. Less force, but good sound is your goal.
Learn to play legato. Keep time.
Learn the fretboard. Play lots of chords: triads, 7, m7, maj7, mmaj7, 6, dim etc. Two octaves helps to learn every fret.
Learn two beat, and four beat, and then walking bass. Before that you need to be able to play at least the most common chords.
Move your plucking hand and find new sounds. Listen to A from 5th fret @ E and an open A side by side.
I hate metronome, therefore I play along with radio: you do not know what's coming up, and you need to follow the music. In time.