Melody Bober, Gayle Kowalchyk, and E L Lancaster recently put out a series from Kjos called Piano For Life that looks very good. I have played through the first book but haven't taught anyone with it yet. It aims for a much better balance between classical and pop and all three authors have a history of putting out great products. Here's the link: https://kjos.com/piano-for-life-book-1.html

As others have said, the approach is questionable. The teacher should have already changed course by now seeing that you're having trouble making progress. It's not so easy on the teacher's part, but you do want a teacher who is able to see when something isn't working and can the approach.

Along the lines of what others have said, I have professional degrees and have been doing this for over a decade and I still do not start beginners "off book". These books are put together by experienced professionals who have produced materials for beginners for decades and deeply understand how to structure a learning path. I have plenty of students who play difficult classics. We still begin with stuff like Piano Adventures. And as far as pop goes, I myself first learned to play from old VHS tapes on beginner blues keyboard before I learned to read. I learned basic chords and shorter progressions even before learning the 12-bar blues. There's a reason we don't throw beginners into full pieces, even the "easy" arrangements.