If you start him when he's 7-9 weeks old, it'll probably need to be every 2 hours; from 9-14 weeks, every 3 hours; 14 weeks and up, every 4 hours. These are general guidelines, of course, and you may find that your puppy needs to go out more or less frequently.
Do 8 week old puppies sleep through the night?
How Long Until A Puppy Can Sleep Through the Night? You can expect your puppy to consistently sleep through the night from around 8 weeks but there is no hard and fast rule.
How long can an 8 week puppy hold it at night?
A rule of thumb many trainers agree upon is that a puppy can hold her urine for the number of hours that corresponds to her age in months, plus one. So an eight-week-old puppy (two months) can hold it for three hours—but that is the most time she can hold it, so she may feel the urgency to eliminate before that.
How long can an 8 week old puppy go without peeing at night?
According to the Humane Society of the United States, most puppies can actually sleep for up to seven hours without relieving themselves—so it definitely is possible.
How often should you let puppy out at night?
Take your puppy outside frequently—at least every two hours—and immediately after they wake up, during and after playing, and after eating or drinking.

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How long should you wait outside for your dog to pee at night?Do you have to take a puppy out in the middle of the night?