Most of my Ukrainian this week did not happen at a desk.
A short session with the app before the gym. A manga chapter on my phone between sets. Another session on the walk home. Each one was small. Together they were more than I would have done if I had waited for a proper block of time.
I think a lot of people stop because they are waiting for that block. An hour, a quiet room, a clear head. It does not come often enough.
So where does your studying actually happen. Not where you think it should. Where it really does.