I know you are going to wait until your son is in school, @Happychappy12345 - I think that is sensible.
As a note for the future - the problem with the fashionable breeds of dog, including the cross breeds like cavapoos etc, is that the unscrupulous back yard breeders have cottoned onto their popularity, and so puppies are churned out in puppy mills, where the mums are living in squalor, with little or no care given, having litter after litter with no pause between - so the puppies come from unhealthy mums, and spend their first few weeks living in the same terrible conditions.
The breeders don’t do any tests or take any care to make sure they aren’t breeding in poor genetic traits - as an example, when a reputable breeder breeds Labrador puppies, they test the parents for things like their hip and knee joint health, and their eyes (for a specific illness) - they look at the parents’ scores for these, and combine them, and they want to be as low as possible. Back yard breeders don’t take that sort of care and so you end up with puppies with life limiting conditions.
This all means that they are often sickly - people end up with a puppy that either needs lots of expensive veterinary care, or worse, the puppy dies.