My 2 month old is fed breast milk from a bottle he drinks 5 oz. it says he should eat every 4 hours but he mostly waits 5 hours is this ok?

Yes!: As long as your baby is growing well, & pooping and peeing regularly, then he may not need to eat every 4 hours. Those recommendations are good guidelines but every baby is unique! kudos to you for exclusively breastfeeding him! it is a hard job & has so many health benefits for both of you. Hopefully you will be able to continue to 6 (or even 12 months).