I agree with Bulldog and Mike. I will add what I include in my practice.
When there is a lick or phrase in the tune that I am learning that slows me down or gives me trouble, I practice it by itself. I like to use the tef files Ben provides so I can slow it down and repeat it as many times as I need to enforce the tune and phrasing. Then I work it into the whole song until I can smoothly play the troublesome part. Then I play with Ben's rythm. The next practice session I again play the troublesome parts by themselves over and over til it becomes normal. Same thing the next day. I have maybe learned 3-4 songs in the last 6 weeks and still sometimes practice only 4, 6, or maybe 8 notes of each of these songs just to build on and to remember the hard parts.
Then when I move on to the next song, I go back to these tough parts even as I'm learning the new song. I believe you always need to work on something new to keep things fresh, but also must go back to what you have learned. If you only practice the new song you are learning, you may lose some of what you worked so hard on last week.
Also the scales you are practicing are a great way to practice. I bet if most of us were honest not very many of us could play the two octave scales forward, backwards and circular at high speeds, but we move on to learn new songs any way to avoid boredom. These are just some of my thoughts. We all learn differently. Keep practicing!