8.5 months rejecting bottle

i think my LO is teething, the top two. she has been rejecting bottle feed for past few days (on and off) till today (3 apr), she totally reject it. she dont want to open her mouth when i put the teat near. however, she is ok with solid foods (porridge, cereal, fruits, etc). i tried to feed her with spoon, sippy cup and straw bottle, all got rejected. funnny thing was i fed her cereal with the milk she rejected (both bottle and spoon), she has no issue to finish them all. previously when her bottom 2 were teething, she dont display anything like this. very worried as no milk intake and affecting wet diapers. anyone experienced similar episode and can advise how u overcame this? thanks in advance.