Hi, we’ve had our new puppy now for just over a month and he’s now 15 weeks old. Al the research I did indicated that you should only walk pups for 5 mins per the number of months old. So we’ve done no more than a maximum of 15 minutes per walk and only walking twice per day. As he approaches 4 months we’re going to up this to 20 mins per walk but is it ok to increase him to 3 walks per day? We find he has loads of energy and often struggles to sleep at night, so we think maybe doing 3 20 minutes walks may help to burn up some energy and help his sleep. Any guidance please???