Certif1ed

Not sure I understand the problem here - air in your voice is essential...

Without having heard you sing, I'd guess you mean you have a "breathy" sound - which may not be a problem, as some singers cultivate that sound.

If it's "too much", then I can only guess that you need to work on the diaphragm, with the information to hand. That would certainly fix many issues with the falsetto range, which depends on you sending larger amounts of air through your vocal chords. You need to know where to send that air so that the tone is supported the way you want it.

The other physical aspect which will affect tones especially in this register is the palatte - the soft bit at the back of the roof of your mouth. It should be in a "raised" but not overly tight position for high notes.

Again, humming is a great way to get focus on the kinds of things you need to do to improve tone in this register. Try it - it works.