Yeah dog. Thats more than reasonable. It’s respectful as well. You know you might be late. That’s going to happen if they have a heads up or not. So better to give them a heads up just in case right? Best case; you’re never late and the teacher appreciates how you busted your ass to get to class on time. Worst case you’re late constantly but the teacher knows it’s out of your control. Sending love 😁🤟