How to consider cost benefit tradeoffs of practice vs retention in spaced repetition memory systems?

Practicing more will get you higher stability (Two-component model of memory) but of course it also takes more time. How to square this? Can we construct some unifying model?

• Eglington, L. G., & Pavlik Jr, P. I. (2020). Optimizing practice scheduling requires quantitative tracking of individual item performance. Npj Science of Learning, 5(1), 15

To read

• Rawson, K. A., & Dunlosky, J. (2011). Optimizing schedules of retrieval practice for durable and efficient learning: How much is enough? Journal of Experimental Psychology: General, 140(3), 283–302. https://doi.org/10.1037/a0023956