Interesting pedi appt..

My sons pediatrician said to give my 4 month old cereal, peanut butter, to stop feeding him at night, to transfer him into his own room, and to start letting him cry more. I never planned on giving him cereal because it’s not even good for them. I’m scared to give him peanut butter and she couldn’t even answer my question of wether or not it transfers through my milk when I breastfeed. I have no issue feeding him at night because we cosleep. I don’t want to transfer him to his own room because it gives me anxiety. And I really don’t want to let him cry it breaks my heart.

Anyone have a similar 4 month check up? And what did you do?