Blocked nose (sounds silly) and mouth breathing

Hi all,
Sounds ridiculous but here I am. I have recently started conscious connected breathing and had some beautiful moments.

However when I was two years of age (who knows if it's true as I had deeply disturbed parents) I apparently fell off the lounge and broke my nose. I feel like I can't get a proper breath in or out of my nose and I am predominantly a mouth breather. Obviously I am supposed to be able to breathe in from my nose but I'm not able to.

Besides a referral to an ear nose and throat specialist, is there anything else I can do? It's absolutely agitating me now that I'm so cognisant that I can't breathe through my nose hardly.