I’ve read about Buteyko Breathing. Is it a good idea to start experimenting with breath reduction on my own?

Without proper instructions, attempting this kind of breathing retraining on your own could be risky for your health, or you simply might not achieve the results you desire. You should seek out expert supervision and find a  Buteyko Specialist to work with. Dr. Buteyko always insisted that his method was best learned under the supervision of a competent practitioner. Another option is learning on your own by watching Sasha’s instructional video course and booking a Private Session online with a Buteyko Specialist if you need individual guidance.