HELP PLEASE

Hi ladies this is going to be a lengthy question but please help mamas! I have exclusively BF my son for 8 months now he refuses to eat most foods and hates any formula! He has started to bite me while feeding so that's the last straw for me. My questions are is it to early to start on milk I thinking he may like that better and also what bottle do you recommend even though I have already tried most of them! ( his pediatrician doesn't have any appointments available for a month so that's why asking for some advice here) TIA