I’ve changed my diet...no dairy...no acid type foods...basically a bland diet to breast feed my son…

I’ve changed my diet...no dairy...no acid type foods...basically a bland diet to breast feed my son and he is still spitting up and it got so bad it is coming out his nose! I’ve had his sleeping at an angle even....I burp in between feeds even though he is at the breast but today was the last straw because he was literally bawling and screaming and having issues breathing because it clogged up his nose! I was crying with him sucking out all the stuff 😭😭