handle smb. with kid gloves

или treat smb. (или smth.) with kid gloves

   oбpaщaтьcя c кeм-л. (или c чём-л.) дeликaтнo, мягкo, ocтopoжнo [пepвoнaч. aмep.] Your trouble is that your mother and I have been so busy handling you with kid gloves that we've allowed you time and again to get away with behaviour no child should be allowed to get away with (5. Howatch). Now this is a job you'll have to handle with kid gloves. It's dynamite (E. S. Gardner)