Ask HN: Lifehacks to prepare for a FAANG Interviews?

Planning on switching jobs soon, and having difficulty getting enough time to go through the generic medium difficulty CS content (backtracking, DP, union find, etc).

I only have so much time in the day with my day job; just a handful of hours, and then the usual life stuff like cooking/cleaning/exercise.

For those who have been through this horrible process, what sort of timeframes did you set to get the prep done and what sacrifices did you make?