A combination of family friends and child care centers.
Here’s a few things to consider:
a) some half-day Ks will not meet at all when the other grades have an early release day or a delayed start day.
b) some after care centers do not take children on early release days or school holidays.
c) a private preschool with a kindergarten may provide the most stability if a or b is an issue for your family.
In my old district some schools had after K care (“fun club”) and some did not. AM K is there with no other kids until the rest of the school gets out and care was available until 6pm. Lucky for us we attended one that did. When we moved I was super sad to discover NONE of our schools in our district had after K or after school care onsite. At least my older daughter was in 1st grade. BUT the next year my younger started K AND no care. She ended up being in afternoon and so that was crazy. At least my employer was flexible and let me come in later. You need to find a school that has something available. Call the school and ask them if they know what people do. Is there a program at the school available? IS there a local church that has a kid care program (the school that my kids go to now has a church 1/4 mile away and they have before and after school care. They walk the kids to/from school for all day and 1/2 day kinder. both AM and PM) Is there a kindercare in your area? these centers pick up/drop off at schools but not all schools. so check. There may also be local centers or child care facilities that do so. Some private in home day cares offer this. My youngest is in afternoon K now and she goes in early on wednesdays. One of her classmates mom’s picks her up and takes her home until my husband gets off. It is going to take a good amount of work and planning but you can do it. Good thing you are starting now. Check your district website and call the district and they might know some ways to help you.