I have I have chronic SI joint inflammation. And I recently started using this back pain relief thing from Therabody. I love it so much and it helps my SI joint so much. The red light therapy is so great for inflammation and the heat and vibration helps with the pain. You can get it at a few different places so linking a few of them below. I also use some thing called the hip hook when my SI joint starts to flare up. It helps release the PSOAS muscles. It’s pretty pricey, and I can’t link it on here so I’m linking some other similar things that are much more affordable. That will also help release your PSOAS muscles