10 month old barely drinking formula

So my son is 10 months old and he just doesn’t seem interested in his formula/bottles anymore, he only eats about 18-22 oz depending, but I feel like he would drink a lot less if I wasn’t making him drink his bottles, he eats 3 meals a day and has some snacks and loves food eats everything, but he’s become fussy with his bottles and not finishing them sometimes and spitting them up, and I don’t know what’s going on has this ever happened to your baby? Is he experiencing reflux? Maybe just sick of formula now that he’s tasted food? Lol I just don’t know if I lay him down with a bottle he drinks a little fusses and throws it and he always leave a ljttle under an oz? Anyone had advice