HELP! breastfeeding to formula transition.

My son will be 6 months old Friday, I am wanting him to transition from Breastfeeding to Formula. I have tried every Enfamil product as well as Organic formula, none of which he likes, I've even added banana oatmeal rice to the bottle to make it sweeter but he still hates it. At first he did not like take a bottle at all but recently we have overcame that obstacle. What do y'all recommend from transitioning breastmilk to formula? Thank you in advance for your help!