Your puppy will only receive "puppy vaccines" from the breeder's vet. They will not likely include Lepto. (though they COULD if your breeder is careless and allows the vet to use the 5 way) AT MOST your puppy will have received two puppy vaccines. MOST Havanese breeders use the Jean Dodd's minimal vaccine protocol, meaning that your puppy will have received ONE does, at 9 weeks (or close to that age) If possible, the breeder will try to find a vet who will use distemper and parvo ONLY, though in some areas that is very difficult, and the addition of infectious hepatitis and parainfluenza.This vaccine is called "DHPP". This is not a huge problem, though I choose to avoid it for my puppies.
You will then need to take your puppy back for a second distemper/parvo (or DHPP) shoot, and them a third Parvo ONLY shot. Rabies is COMPLETELY separate, and should be given COMPLETELY separately, AT LEAST TWO WEEKS away from these other vaccinations, and as late as it is allowed by your state/local government. For me, in MA, that is 6 months, but alas, some states require it at 4 months. 😥
Here is Dr. Dodds' most recent update of the vaccine protocol. (which added the extra dose of Parvo vaccine when a more virulent strain was found circulating)
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BUT, I wanted to add that every breeder worth their salt will also go over all of this with you, and will probably also send this information home with you in your "puppy packet!"

They have put a tremendous amount of love, time and effort into these puppies, and the LAST thing they want is for you to take them home and do them harm! Your breeder should always be your first source for this sort of information! 💕