Hey DJ Jazzy Pete,
One thing that I often do myself is have practice sessions that are separate to mix sessions. I also play Guitar and there are some parallels, sometimes I put on an album and just play through the whole thing, it’s fun and you work on your technique but I don’t consider it practice as such. Practicing on guitar is working on scales, chords, improv etc.
With DJing I’ll often have mix sessions (jamming along with the album) but I’ll also set aside 30 minutes or so to just focus on one aspect of DJing, Hot cue juggling or scratching for example (to me the DJing equivalent of working on scales, chords etc).
Obviously being a musician first and foremost I approach it a little differently so it might not be as relevant to you but hopefully it’ll give you some ideas 🙂
Scott.