You did the right thing with intermittent compression and ice application. Is it bleeding profusely or has it stopped.
If it is bleeding profusely, he needs to visit a doctor.
If it is a small wound and the bleeding has stopped, don't worry about it , it will heal on its own. Right now , he can suck an ice cube or so.
Avoid salty and spicy food for a couple of days.
Have a liquid or semi solid diet ,that is easy to swallow.
After 1 day or so , do warm saline gargles three times a day OR listerine
mouth wash twice a day .
Do get back to me for further clarifications.
Wishing your uncle a speedy recovery .
Dr. Divya Kuttikrishnan