…in one sense you might not need to.
If the verses and choruses you’ve been writing aren’t great chances are you don’t need to move on to writing super weird wandering seven minute songs just because it looks like intellectual progress.
i.e. If you haven’t written your Meet The Beatles yet no need to progress to writing your Sgt. Peppers
Progress has to do with destination and betterment. What’s the desired destination and do you need to adopt a new path or simply get better at the one you’re walking?