Girls, I'm at my wit's end! Has anyone experienced this? My son is 3 m…

Girls, I'm at my wit's end! Has anyone experienced this? My son is 3 months and 4 years old, and he constantly scratches his nose while sleeping and wakes up from it. He used to sleep okay even if we were covering him, but now it's a nightmare! He scratches his nose, wakes up crying, I give him breast milk to calm him down, put him down, he sleeps for 5 minutes and then scratches his nose again and cries...??‍♀️ I just sit all night calming him down. I'm so exhausted ? I know I probably need to see a doctor. But I just want to hear from someone who has been through this or knows how to deal with it?