Photoshoot with an almost 4 month old puppy - Any tips?

As the title says, my husband and I are getting photos taken with our new puppy. She is almost 4 months old. My cousin (new photographer) is taking the photos. This will be her first photoshoot with a dog (besides her own). I've been reading that its important to have a dog handler, so I reached out to a couple of friends. We'll also be bring lots of treats. Thankfully she is pretty food motivated. She knows how to sit, shake & lay down. We're working on stay. The photos are being taken at a trailhead near our house. We're going to take her there a couple of days before so its not a completely new experience for her. Any other tips? We're also a super chill couple and understand that it could be craziness, so I'm not expecting perfection in the slightest. Thanks in advance!