Out of ideas

Hi, I'm trying to introduce bottle for my almost 5 months old son. I tried twi different types of bottles, mam and nuk, different teats, dummies. I tried to feed him, my partner tried, my mother in law but he just move his head left and right like crazy playing with a teat instead of trying to suck. Within first 2 months he was getting mam bottle with breastmilk, but then I tried formula and he didn't like it. I'm back to breastmilk again but it seems he doesn't like that one anymore too. I'm really running out of ideas what to do to get him finally to drink from a bottle. Should I leave him for a whole day with my partner/mum and he will finally get hungry and drink it? But i don't want him to be traumatised. Any help, welcome...