There’s lots of great suggestions here. In my opinion, if you feel you’re losing interest or getting bored. Just play what you want to play. There is such a thing as overpracticing. What I mean by that is, if you’re only practicing what you’re struggling with and not being creative with the aspects that you’re good at, it can feel discouraging. For instance, I will designate certain amounts of time to work on what I’m struggling with and what I want to improve upon, then I’ll spend time just playing what I want to work on creatively and having fun with it. I also recommend writing riffs or parts that you can’t play right of the bat because you’ll want to play something you wrote correctly. That often spurs me to put even more time in. I find it automatically gives me more interest if I’m applying something new to my own songs.
I agree with Christopher. It’d be cool to see how you approach harmonies, chord progressions and different voicings. It’d also be cool to see whatever you guys are currently working on and excited about in your own playing.