Rome wasn't built in a day, and training a Vizsla puppy won't happen overnight.
Depending on your training skills, and your pups drive to play rough, it can take awhile.
Your breeder should have explained to you, about the little red shark phase. Especially with you having young kids in the house. Lots of time, and consistency are the only I've found to work.
I'm sure you will get some good advice here. But also speak with your breeder. As they should know their puppies, better than anyone else.
Not all those who wander are lost.
Life is just a leap of faith.
Spread your arms and hold your breath and always trust your cape.
Two things define you. Your patience when you have nothing, and your attitude when you have everything.