Pottyy training is all about catching them before they want to go and giving them a place they are allowed to do it, if you cannot let them out. We have had both newf pups and adult newf rescue dogs, who have required training. I watch them constantly....
.......Our dogs live inside and are only crated when they are very young. I put them out side as soon as they have eaten anything, even a small snack. And praise them when they do anything outside. When they are inside asleep, I put them outside as soon as I see them get up. I walk out with them all the time initially. Even if they are inside awake and lying with me, I give them a chance outside as soon as they get up. I try to get there before they think of going. It can mean hourly trips outside the first few weeks and it can be very tedious for the anyone
Even at night I see to them when they get up. And walk them out. Our most recent rescue newf of five weeks was kept in an outdoor kennel. She has only had two mistakes and consider them both my fault due to lack of attention. She is pretty good now. By feeding her her evening meal at about five. And plenty of walks all night before we go to bed. She now sleeps through the night. And has even given me one of her big kisses to let her out a couple of times. We make no real issue over any mistakes and praise lots for the outside jobs
Because we take in adult and/or pups dogs with our adult dogs. We are very strict "Alpha" dogs at feeding time. Each has there own bowl and spot within the same room (kitchen). We growl(the terms "enough", "leave it") at any dog that tries to go to another bowl and they have to be supervised initially at all times. And remember you are in charge. We have even had one of our new dogs on a "check chain" whilst initially social eating with ours. Sothat we do have the control. It is all a bit over the top and tedious at the beginning, but they are all so good now and they can eat together in about three square feet, even though our new newf eats slower and finishes last.
We do do a lot of dog training with all our dogs. We have found that we can have a pack of dogs and everything is still calm (up to six we have had), because we are in charge and none of the dogs are. We do not hit our dogs and I hate yelling at dogs. We are very firm and if we think we are a little out of control at times, we go back to "on lead", Even a very long lead. That means you have control and don't have to yell, which is so ugly. Our pups start "on lead" as soon as we get them home. When we go out, we keep our dogs in a large six foot high run with a ten by ten foot kennelhouse attached for safe keeping. Sorry this is soooo long. I wish you a lot of fun and happiness with your adorable puppies.