Weaning / formula shortage

For the past week I started to wean from nursing/ pumping. We’ve always supplemented with formula bc I don’t pump much at work. Maybe 4 oz after three pumping sessions. Now I’m starting to feel guilty that there is a serious shortage of formula and I’m not sure what to do. I wanted to stop nursing bc I’m honestly just mentally over it and my baby has been biting me. I have enough formula to last me maybe a month or two. My baby is just about 9 months old . Any one have any advice ??! Or words of wisdom/ encouragement ? I’m thinking about starting to pump again/more often but I’m not sure how it would go.