A house rule, not a session: at home, the ball only gets touched with your left foot. Moving it out of the doorway — left. Rolling it under your desk while you do homework — left. Little passes against the skirting board (if that’s allowed) — left.
Use a soft ball, a foam ball, or rolled-up socks. Agree the rules with whoever you live with first — where the ball can go, where it can’t. That conversation takes one minute and keeps the game alive for months.
Why it works is simple arithmetic. Your week has maybe four or five hours of training, but dozens of idle minutes at home. A few left-foot touches at a time, most days, is hundreds of extra touches a week on the foot that needs them — for zero extra schedule. And because nobody’s watching and nothing counts, the clumsiness doesn’t matter. That’s exactly the condition a weak foot learns fastest in.
Sole rolls. Ball under the left sole, roll it forward and back, side to side. While reading, while talking, while waiting.
Inside–outside. Push the ball a step with the inside of the left foot, bring it back with the outside. Doorframe to doorframe.
The pass that’s just tidying up. Any time the ball needs to be somewhere else, it travels by left foot. That’s it. That’s the whole rule.
progression. none needed — the progression is the habit surviving. if you want one anyway: try stopping a rolled ball dead with the left sole, then with the inside, then first-time passing it back to where it came from.
background: the second sport isn’t a distraction