Quick 5-minute study hacks for a busy schedule?

Hey everyone, Oliver here! I'm super pumped about learning Japanese, but I'm struggling to find long study sessions. I want to make sure I don't lack consistency, so how do you guys handle practice in tiny blocks? Do you have any high-energy memorization tactics for when you only have a few minutes? I'm looking for ways to see real change in my skills even on my busiest days. Let's crush this!