Bottle strike?! Please help!

Hi mommies, my 3-month-old daughter suddenly changed her drinking habit. Since 2 weeks ago, she dropped her intake by half (from 900ml to ~ 500ml per day). And for the past 1 week, she refused to take milk from bottles, be it breastmilk or formula. She had been taking milk from bottles since birth without any resistence. Now she gets angry, arches back and forth and pushes the bottle away by hands. She only accepts latch-on. My breastmilk supply is not enough for her consumption. Hence, I can't let her go on without formula top-up. Any mommies experience this before? Please help me! Thanks alot!