Advice!? 10hr drive with 2 week old

Marina • Married my best friend 05/19/18💗 Mama to my 12 fur babies💓 Ocean 🌊 06/13/19💕 baby #2 due 10/12/21

My husbands grandma just passed away and we don’t know when the funeral will be so she could be between 2 and 3 weeks old because she turns 2 weeks this Thursday. But it’s 10 hours away! We are most likely going because this is the only grandparent he has left so we really just need any advice on how to make this trip easier. I know they aren’t supposed to be in the carseat for long periods of time so we will be taking many breaks for feedings, cuddles and diaper changes. Any other advice is much appreciated. I want to keep my girl as safe, comfortable and relaxed as I possibly can.

Thank you in advance! ❤️