Is it okay to give Havanese puppy 2nd DHPP and Lepto vaccine on the same day?

Hi all, wondering if getting both shots on the same day would be too much for my Havanese pup. Breeder informed me that I should get her final DHPP and rabies shot a week apart (which I plan to do) but I wasn’t sure if this applies to every vaccine. She’s so smol so I worry but my vet also charges $135 per every visit even if it’s just a vaccine so I’m balancing this consideration as well 😅