i understand this situation. i had this issue as she got distracted over alot of things at this age onwards. i then started to go by her feeding cues instead of following on the time strictly. i think your baby isn't hungry just yet. what you can try is wait for her hunger cue and you can then know maybe her time between each feed has been extended.
It happens from time to time. I will check if my baby is having a bloated stomach. Sometimes, some distractions help to get her drinking, eg having someone singing/dancing in front of her.