Thoughts on 2nd year Koine readers?

I finished Croy and for a couple years read 20-30 minutes almost daily from a UBS Reader’s NT or selections from the LXX. I would generally have a public-domain commentary to help with the Greek. I expanded my vocab and my Greek didn’t atrophy, but I never felt real improvement in grammar and never felt that comfortable advancing to more difficult books in the NT (though I know there was certainly some improvement).

After some years hiatus from Greek, I now have some time. It’s been three weeks, I am finishing up Croy and have started the epistles of John in the Readers NT.

I am looking to study 20-30 minutes a day (or 40-60 minutes every other day). Instead of choosing my reading and using a random commentary+grammar, I’m looking for a reader that provides more than just glosses and a vocab list—a book that has a goal in advancing the student’s knowledge of grammar (so “graduated” or meant for use in schools seems desirable). I am not too picky about what is being read (NT vs LXX vs Church Fathers, etc.)—just an appropriate/increasing level of challenge and helping the student become better prepared for independent reading.

Does anyone have recommendations along these lines or experience with any of the following?

Robert Whitacre’s Patristic Greek Reader A patristic Greek reader : Free Download, Borrow, and Streaming : Internet Archive

Rodney Decker’s Koine Greek Reader

McLean’s Hellenistic and Biblical Greek: A Graduated Reader

Richard Wright’s A Reader in Biblical Greek

Thanks for any assistance! I’ve always found this forum a lot of help.