It might help to get some of that energy out before the walk too. Does he get to run around much at all? He’s young and really needs time to run free in a safe area. Might help his walking skills to get some of that pent up energy out. Also get some really high value treats like boiled chicken, hot dogs, cheese, lunch meat, etc. and reward him for walking with a loose leash. But the biggest thing is to NOT let him go when he pulls. So when he does that crazy gate running thing? Plant yourself there and DO NOT MOVE until he stops pulling and comes back to you. This will be hard at first and you may find that you don’t even have time to go for the walk by the time you get through waiting haha but that’s okay. The important thing is getting past that even if it takes time then it will be easier. Right now, he thinks that he still gets to go for the walk even if he is being crazy and that sets the energy for the whole walk and it’s not a good one. Can you make him sit and wait before you open the gate like you do with the door? You might need to work on impulse control more than the actual walking and just practice opening and closing the gate and doors, etc. a ton before you even walk. If he starts to go out, just shut the door and wait till he sits back down. This may take a while.
