Hope everything goes well with your brother's appointment today. Since my son's surgery experience was removal of only one sixth of his tongue, perhaps someone else here with more experience than my son or I have, can comment on your -

#1 question re: <<. . . doing another surgery of removing the tongue>>

I think I would be asking "Does this mean the whole tongue depending on what they see during surgery or is there a chance that only a portion of the tongue can be removed ?" And if this is the case, I would ask what is involved in the rebuilding procedure and recovery.

Stay close and let us know what happens today.