So my son has been ultra picky when it comes to food lately. He drinks 4 bottles a day up to 6-7 oz…

So my son has been ultra picky when it comes to food lately. He drinks 4 bottles a day up to 6-7 oz I try to do 3 meals a day but that all depends on whether he will eat it or not. With him not really eating much food food i'm concerned he may lose weight.. I do try. I offer up to 2 different foods and if he starts refusing I'm not going to force it. He likes goldfish, plain Cheerios and his other baby crunchy treats. But he needs other food too. :/ any suggestions