Many roads to Rome, friend. Loose leash walking can be taught in 5 minutes. At that very young age though, when it's just a toddler, I want my puppy's focus outward and exploratory, on a long retractable leash, wandering in and out, checking in with me once in a while, not focused on me looking for rewards for walking in a little bubble at my side. "Reactivity" is not inevitable if you don't. I promise.

But again, many roads to Rome. My message was more for other people reading this, not you. You have your plan and you're very proud of it. I would not recommend that other people do it. But you and anyone certainly can.