Good exercises for flute?

I am a professional flutist in NY, a multi-decade teacher and adjudicator, nad have a private studio. NOBODY can tell you what exercises to do, unless they are your teacher - someone who sees and hears you, can assess what you need, and then gives you exercises to help you. Asking here is pretty pointless - we can tell you what areas in general should be addressed, such as tone formation and flexibility of octave change, intonation, posture and hand position, BREATHING, as well as musical skills such as counting, music-reading and sight-reading, etc. - but without hearing you - cannot give one-size-fits-all exercises. Find a good teacher - period.