Studying in Short Time Windows

What’s everyone else’s strategy for studying during short time frames? (e.g., downtime at work, commuting, between meetings, etc.)

Get up early and study before work, study late before you go to bed.

sit in the window till you fall out either side?

Getting up at 530 or 6am and studying until 8ish, then 30min around lunch, then 30-60min after work.

I work lunchtimes without fail. That is 30 minutes. I believe in it.

It is what makes 2 hours per day possible for me.

I try and read before work for 30 minutes as well, and 30 minutes after work. Those small amounts of time eventually builds.