1 year old and formula

My baby girl has recently turned one and per the nhs website should now be on only cows milk. In my opinion, my baby is no where near to eating enough food to provide her with the equivalent nutritional value she gets from formula. She’s very fussy and has a very small appetite. I am persevering with the food but have kept to 2 bottles of formula a day (after meals) to top her up. Has anyone used follow on milks or would you stick with stage 1? (She has one drink of cows milk with lunch also)