When to go to hospital 1 hr away!?

Aimee • Surprise and last baby #4 coming Sept 2021 ❤️🙏🏽
Hey everyone I'll be 30 weeks Sunday and I know I have a lil bit to go but just in preparation.... This will be my second and I was wondering when I should head to the hospital from being so far? I know a lot can change in an hr... So from experience anyone have any advice ? My in laws live near the hospital so that's there too...