Staying consistent on low energy

I'm trying to figure out how to maintain consistency when my stamina is low. Instead of a full session, I've been trying to extract just one specific detail to study when I get home late. It feels like a quick match against my own laziness. Does anyone else do this focused micro-study or is it better to just rest when you're totaly drained? I feel like the nuance gets lost if I don't touch the language daily.