" find my mind just doesn't want to go beyond about 5-10 minutes of breathing, vs the 30 minutes I did in breathwork sessions."

Same for me. I did a workshop with Wim Hof and the breathing exercises were great with really profound effects. But I couldn't make myself practicing at home with the same intensity regularly. I also developed a pretty bad cough after a few weeks. Probably from the dry air where I live.