Normal to flare nostrils?

Guess • 🔹Married to my high school sweet heart🔹Mom of three amazing boys, Maverick born Jan 2017, Arius born Sept 2018, and Draxton born Aug 2021

This is my second baby but I have so much anxiety with him 😞 he is 4 months old and has been through a lot. At 2 weeks old he was hospitalized with meningitis and at 4 weeks old he was hospitalized with RSV. Ever since then he has had some quirks. I’m wondering if he is having issues with breathing his doctor is stumped and consulting a specialist for some of his odd behavior but I’m wondering if it’s normal to flare his nose like this frequently?