We don't SWIM here.
If you have no tolerance, then I would STRONGLY suggest that you do not combine the two.
Enjoy the two separately on two different nights.
Mixing two highly potent CNS depressants is a really bad idea, especially with no tolerance, that's how people OD and die. It's generally accepted that mixing benzodiazepines (Xanax) with opioids (Lortab) is dangerous and certainly should not be done by anyone without tolerance.
One night I might take 5mg of hydrocodone with a 5mg redose if necessary after an hour.
Break up that xanax bar into 4 pieces of 0.5mg and use them each on different days, not on the same night as the hydrocodone.