Had you ever consulted a ENT doctor for the bump on the tongue since the age of your father is a bit on higher side this bump maybe a serious concern can you share me the image of the same so that I can guide you further since it’s not looking like a simple glossitis any mouse or bump inside the tongue should be evaluated for any further condition like carcinoma of tounge etc
Next Steps
Try with what he feels good to eat
Health Tips
Feel free to consult with image