I agree with others to just keep offering foods. Our job is to provide healthy food. The child's job is to decide what they will eat of that food. Having a son with food issues, I can say that forcing a child to eat is a surefire way to cause more issues with food.

As for the bottle, it may be worth considering, especially for wee ones new to care, that being held to bottle feed is about more than just nutrition. Some children need more physical touch and comfort than others. If holding them for five minutes while they have a bottle gives them the reassurance they need to continue on with a happy day, it's five minutes well spent to avoid hours of frustration for both the child and care giver.