6 days per week · 30 days ≈ 5 weeks
The rungs you finished on are the result — that's where the size came from.
One day off a week. The grid only counts days you finish, so a rest day costs you nothing here.
Push-up · 4 sets
Chest. The main event.
Dip · 3 sets
Triceps — two-thirds of your arm. Stop at parallel.
Curl · 3 sets
Biceps. Band, low door anchor.
How to progress: when a move's sets all hit 15 clean reps and still feel easy, climb one rung. The set count never changes — the sets just get harder.
Packing list: a band set with door anchor. Everything else is a chair, a door, and the floor.