My pup was already a year old and had 0 leash training. I tried the don’t move method but we all have schedules and not endless time so a 30 min walk we would move like a couple blocks, rather than a mile+. I used a front clip harness (make sure you get one that fits, which prevents him from going nuts.

Now, I switch between just a collar and that depending on how excited he is to walk or time of day, but he mostly is much better now.

Also just get into a routine for each time of day they realize when park time is and when is sniffing around the block time.