Help !! How can I get baby to take a bottle??

Jess
My lo is 4 months old and has been ebf the whole time. My hubby and I want to go out for dinner in November for his birthday, so we need lo to take a bottle from my mum, but he refuses to take the bottle, we have tried a few breast like bottles but he just spits it out and then crys constantly.
Any advice or tips would be great. Thanks x