I am sorry to hear that this has limited your practice but happy to hear you will have treatment too. I often reccommend that prior to a treatment like surgury, students take it easy and remember that there will be time for practice after. That being said, there are some poses that area actually helpful for this type of hernia. Gentle inversions take pressure off the area which can be a good thing, legs up the wall with a block under the pelvis or other inversions you are comfortable with. This might be a time to explore some restorative practices also