Hello,
You can try the expedited route just as long as you can provide strong evidence with supporting documents. My husband and I cr1 case recently got approved for expedited processing in the NVC stage because our daughter is having surgery in October. I provided photo evidence of her condition as well as progress notes from our doctors visit with the recommendation for surgery and her surgery date. Our request got approved within a week, and our case was forwarded to the US embassy in my husband’s and I country, my husband is scheduled for interview September 1st. Again provide as much evidence as you can. Good luck 👍🏽