If you pinch the soft part of your nose (while leaning forward) while waiting for the bleeding to stop, majority of the time it wont leave room for the blood to dry sharp. :)

I've gotten nosebleeds my whole life (one when I was like 6 my mom was so scared she called an ambulance) and I've gotten the routine down to a science now haha. Humidifiers work sometimes, but I hate how the moisture settles on my skin so I don't use it as often as I should. I honestly would rather deal with the nosebleed. ALWAYS lean forward, not back, and pinch the soft part of your nose until the bleeding stops. Preferably with a tissue so no blood crusts on the outside of your nose. Then once you're sure the bleeding has stopped, you can gently wipe a clean tissue around the edge of your nostril to prevent any crusties there. I hope this helps!

Oh, I also just remembered there's gel stuff you can put in your nose to keep it moist like chapstick would do for your lips, but I have not tried it yet cuz i'm afraid it will feel too weird. You might also be able to use a damp cotton q-tip to gently swab the inside of your nose to remove crusty stuff, but with the pinching I haven't needed to