Tears Won't Come Anymore

Assalamu alaikum, brothers and sisters. I'm struggling with something really heavy. No matter how sad I get, no matter how broken I feel inside, no matter what hits me-I just can't cry. It's like my tears have dried up completely. After all these years of holding everything in, my heart feels like it's turned to stone. I still feel emotions, but I can't let them out, and that makes the pain even worse. When I read the Quran, I barely feel connected. Even when I try to repent to Allah, the Most Merciful, I can't shed a single tear. I don't know how to soften my heart anymore or be a normal human who can cry. Please, if anyone has advice or du'as, I really need help.