Overwhelm & feeling frozen

I just found out I am allowed to work again as Covid restrictions are being lifted in my area. I am a single Mom and have my kids 4-5 days of the week with no childcare currently open. I am grateful to work again, but with that now comes the overwhelm of needing to get work done when my kids are home with me. I feel almost paralyzed with anxiety & am having trouble managing my time appropriately even though I have started to implement calendaring (although not following it very well because I am finding something always comes up with the kids and I’m having to switch things around. ) I feel like my mind is just spinning in circles and I know it’s causing me to get even less done and adding to my overwhelm. I’m not sure where to start with this.