It's still a lot for a lightweight. I just put the drinks and his weight in an online calculator, and if he pounded those in 1 hour, he’s at 0.15% abv.
“You are probably slurring your words and may have blurred vision. You may have obvious problems with body control and balance, and you may be experiencing impairments in your mental capacity.”
He needs more practice to handle his liquor better. Perhaps he should consider becoming an alcoholic.