I see babies all day at work and still can't cut my own son's nails

Paediatrician. I look in tiny ears and mouths all week, mostly without tears. My 8 month old will not let me near his fingers with the clipper. He curls them into fists, arches his back, and gives me a look like I've betrayed the family. His grandmother does all ten in under a minute while singing to him in Telugu. I have stopped telling my colleagues about this.