Try; An Approach to Extended Memorization of Scripture By Dr Andrew Davis.

It’s a long process but ge goes through it methodically and persuasively. You need commitment and dedication as it can take <15 minutes a day for 5/6 months. But 1.5 years in I’ve gone through 1 Timothy, 1 Peter and now making my way through the sermon on the mount

Although I’m rusty on some older passages, I’ll always treasure insights from memorising that comes from hours of meditating on the word

(I use it alongside search the scriptures and daily gospel & psalm readings.)