Help! I have a 4 year old DD who cries every morning and pretends to be sick because she doesn't want to go to school.

She's in preschool, and because of extended Thanksgiving and Christmas breaks + Covid right after Tday, she only went to school 6 days in the last month and a half.

I'm hoping once she gets back into a routine it will be better, but any tips to help speed this process? I have to put her on the bus crying in the morning.