Your puppy will not settle because they have never been taught that downtime exists, and you fix it by building real rest into the day. Puppies regulate like toddlers. They get overtired, overstimulated and demanding, and most of what looks like a settling problem is a rest problem. A puppy who never learns to switch off invents something to do, usually biting, pacing or crying.
CALM is rest on your terms, in a crate or on a tether, where the puppy learns that demanding behaviour gets nothing and only a settled dog gets up. The point is not the duration. It is that the puppy can switch off even when the house is busy.
CALM is one of four modes a puppy needs in balance. Build it alongside real one-on-one PLAY, brain work, and time to just be a dog, and the biting and the witching hour settle with it.
Try this week. Pick one daily moment your puppy usually loses it, often dinner prep or when you sit down in the evening. Put them on a tether or in a crate with a long-lasting chew. Do not let them out until they are fully settled, not just quiet. Repeat tomorrow, and the day after.
Part of the full guide: How to raise a calm puppy
New puppy? The Good Puppy Blueprint is the online program for puppies under twelve weeks. For a dog over twelve weeks, private training works it through one-on-one.