Any suggestions for keeping my sons hands warmer under his gloves.

My son is beginning the second season with his current U10 team. During the first year, the coach placed him in the lower ability team, which I understand as this was the first season with this club. However, I'm not sure whether this is the right team, ability wise, for my son. I appreciate that, as parents, we all want our children to play for the best team but I heard great things about this current club and have found it to be slightly disappointing in regards to challenging my son and developing him as a player. Should I discuss this with the coach and request my son to play in a more established team where he will gain more experience and develop as a player. Any suggestions gratefully received.