I don't think so, since the next avatar will be born to Earth Kingdom he/she would already have learn earth bending. So maybe Mako could teach him Fire bending and Ikki, Meelo, or Jinora can teach them air bending
“Katara discovered it was possible to bloodbend without the full moon one day when her brother was injured in battle and she suddenly knew she could stop the blood gushing out of his wound. She went on to found a hospital specializing in researching.
Aang and Katarra never made Bumi feel bad about being a nonbender, but something about being the Avatar’s son and not bending made Bumi feel like he had to be really likable and strong in every other way possible.