10 months- I'm drying up and baby won't take a bottle

Hi everyone! My baby boy is just a couple days shy of 10 months. Over the last week my milk supply has tanked and no one in the world has been able to get him to take a bottle, let alone with formula. He hates it. He eats three great meals a day (baby food and whatever we eat), and snacks. Likes water, but really doesn'tlike sippy cups. I tip a regular cup for him. I'm concerned that he won't get what he's "supposed" to have from my milk or formula but im considering just giving him whole milk and calling it a day. Calling his Dr office on Monday, but anybody go through this? Pic cause he's too cute not to share lol Thanks!