HELP! My 11 month old refuses to drink milk

Hello mommies! It’s been 2 days na ayaw mag milk ng LO ko. What could possibly be the reason? S26 Gold ang milk niya since 3 months old and ngayon lang talaga siya umaayaw. Wala naman siyang problem sa food intake niya (3 meals & 2 snacks). Please give me insights. I’m a FTM so wala talaga akong idea sa ganito. Thank you for your help mommies!