I would let the dog guide me really worming wise I do find I have a couple of dogs(both male) that I do worm more often as they just seem to need it but most don't.
Just make sure to rotate your wormers & check that the active ingredant is different not just a different brand as dogs get wormer amunitities just like livestock. The saltbush is also a natural worm surpresser we have found livestock(are now doing pet studies) that have regular access to saltbush plants & even as chaff mixed in their feeders with the regular feed have far reduced worm counts. The livestock given saltbush & paddock rotataion(to keep paddocks clean) have high numbers with clean worm counts!!
You know your dog best so I say get all the info you can & then go with the vet you feel best about & the feed the food( + additives)that you find works best for you & your dog. At the end of the day we are all individuals & so are the dogs so what is good for 1 may not be for another really & you are the best qualified after reserch to decide whats best for your dog.
I have to say your pup is lucky to get such a devoted owner good luck to building a lifelong partnership.
Dogs make everyday life enjoyable...........