I don’t drive quite as far as you, but come the exact same route. We make fairly good time on the way home, and people really start driving faster once you get out of Utah County and into Salt Lake and Bountiful. Give yourself plenty of time to get through the afternoon traffic on the way to the game. You should start hitting it by South Jordan or Point of the Mountain, but could be earlier if a lot of Wyoming fans take Weber Canyon. Maybe we will get lucky and they will go through Heber and take Provo Canyon. 😇
Feel free to send me a message and I will share with you the way I take that has been saving us from hitting traffic on the way out, for the past 20 years. I know it is a long ways, but you are making incredible memories for your son, that you just can’t put a price on. I would consider getting a hotel, especially since you still have to drive back through Sardine Canyon.