I literally just attended a lecture on male pelvic floor last week. Understanding the pelvic floor as a man is such an important thing if you want mind-blowing sex. ( I am a big fan of edging hahahaha)

While kegels are great and breathing exercises too, there are better ways to strengthen your pelvic floor.  
Kegels often miss the bigger picture. They isolate one muscle group without teaching you how to actually use your pelvic floor in real life.  
Focusing on kegels only could even make the issue worse. I would suggest finding someone, who works with you on learning how to use your pelvic floor in general, finding that awareness and strengthening it, not just isolated.  

Also, since it's happening in waves I would be curious to know what your life looked the months prior.