i dont know what advice to give you here...but i can tell you my malamute boy had only dropped 1 testicle at 10 weeks old (& the vet had checked and confirmed this) by 11w i thought there were 2 but a few days later he had none

a few days later 2of them were there!
so we had another trip back to the vets who confirmed that 2 had decsended the vet also said sometimes they can suck them up!but not to worry to much at this age..i was half expecting 3 to be there

days later... but he now has two all the time....!!
maybe its to early to make that decision just yet,these breeds can hang on to them for longer...although whatever you decide to do has got to be your choice,if the 2nd testicle dont drop he will need to be neutered
as the trapped testicle can become cancerous.