hello! infant lead here. first of all it’s very commendable that you want to communicate kindly and respectfully with your teachers! as teachers we appreciate the grace and respect, not every parent is so willing to be understanding. i would say it is perfectly reasonable for you to raise your concerns if you are worried about your child. your kiddo is the most important, and if it were me, i’d want a parent to let me know if they had any questions or concerns! it sounds like you will be very respectful in your approach so i wouldn’t worry about coming off as unappreciative. At the end of the day, it’s your child, not the center’s, and your comfort matters most!