It would also be great if you could fact check yourself to make your claim credible.
October 15, 2012: Broncos trailed Chargers 24-0 at half in San Diego, won 35-24, Broncos rushed 12 times after being down 24
November 24, 2013: Patriots trailed Broncos 24-0 at half in New England, won 34-31, Patriots rushed 12 times after being down 24
October 2, 2011: Lions trailed Cowboys 27-3 in 3rd in Dallas, won 34-30, Lions rushed 10 times after being down 24 with 12:27 in the 3rd
January 4, 2014: Colts trailed Chiefs 38-10 in 3rd in Indianapolis, won 45-44, Colts rushed 8 times after being down by 28
February, 5 2017: Patriots trailed Falcons 28-3 in 3rd in SB 51, Patriots won 34-28, Patriots rushed 8 times after being down 25 half way through the 3rd
And these are just in the last 6 years. The point is NONE of these teams ditched their running game. Yeah, they passed a lot more than they ran, but they didn't ditch it. Not sure where you get the idea that you can't run anymore down 24 points at half time.