Nightowl While I'm no longer a beginner, I'm definitely far from advanced... but yes, I feel quite bad about this.
I started taking lessons in September 2019 with Alfred's AIO Level 1 but after about a year my lessons got rudely interrupted and I went for over a year without lessons. At some point, I started Supersonics on my own and I realized I much prefer that over Alfred.
Eventually, I resumed video lessons and Alfred with 15 minutes a week, so not a whole lot.
Looking at The Entertainer, I first started working on it in January... and now it's August and I'm not even done with it. Part of the reason is that part way I stop working on the book and instead focus completely on pieces that take my fancy. It also takes me several weeks before my teacher is satisfied with how I'm doing on any given Alfred piece and in this case we also had a summer break.
And only now have I realized the tactical error I made... instead of focusing completely on a piece for weeks or months at a time, I should have employed interleaved and spaced practice methods. So I could have had ample time to make more progress on Alfred's while also working on pieces I actually like.
Oh well. Live and learn.
I'm excited for September because I'll finally be resuming lessons properly at 30 minutes a week. When I'm done with Book 1, I'll ask my teacher if we can switch to Supersonics instead. I might still buy Book 2 to leaf through though.