When you get a puppy, the environment needs to support both you and them in being able to fulfil the above. How long you will need is impossible to say, as every puppy responds differently.
Socialising your dog during a pandemic
Mental Stimulation ideas for your dog
It’s too easy to make dog walks the main stimulation your dog gets, however, when left to their own devices- dogs may need more than a good run around. Studies on free-ranging dogs show they spend significant time in their day foraging and chewing alongside other self-care behaviours, such as grooming.