Refusing bottle

My almost 8 month old baby is suddenly refusing to drink his bottle. We normally feed him yogurt and puree in the morning and for dinner he’ll have a protein with veggies puree.. there are times when were just so busy and don’t even get a chance to actually sit and have dinner so we will just offer him a bottle. But now that he’s refusing to drink his bottle, its really worrying me that he’s not getting enough food. We tried putting his milk in his favorite sippy cup and as soon as he tastes the milk he refuses it.. however there are times when he’ll sit and drink 6 oz. Has anyone or anyone currently going through this??