Over the last few days DD won't drink milk from her bottle- she was only having one a, day but now she refuses to let me.feed her but won't drink herself. She just walks around.with it

she's spirited in nature so I think she just wants to be independent but IM concerned about her milk intake...
She has 4oz milk.in cereal
3 oz sippy throughout day
8 tbs yoghurt which I think is about 4 oz
1oz cheese
either custard or rice pudding to make Upto 14 oz dairy
Can I give more yoghurt rather than custard or rice pudding (due to sugar content)?
How can I get her to drink more from sippy