Toddler entering childcare center.

So mummies, how long does it takes for ur LO to FINALLY settle down at day care center? Mine just started 3rd week, and i am still having hard time every morning. Is this normal? First week came 1 week, second week dint come at all due to fever and this week will be third week. I guess its also normal for them to fall sick when they first enter day care center right? Please share with me your experience ❤️