Refusing bottle

My son is 4 months old and EBF. He's had 5-6 bottles ever (all avent natural) and took them all fine and this last Sunday he refused a bottle from my husband. I had him try Monday and Tuesday also and he refused. He's in Leap 4 of Wonder Weeks for those who follow that...any advice? I'm a SAHM but we're taking our first date night out since he's been born at the end of the month and I'd love him to take a bottle so we aren't rushed for time. Thanks!