Iron condor-when to adjust

Iron Condor in option trading involves Call credit spread and put credit spread.
After entering the position the index moves in one direction and either callside or put side will be in trouble.
In such case any of the side may go into deep trouble. If I wait till expiry I may end up incurring max-loss in the position. Whether I have to book loss before expiry or try to roll up (if possible). If so precisely when? Whether I have to monitor my loss. Whether it is for my total position or it is for losing side(call or putside-here net position may still under profit when we take call and put together). I am confused. Veterans please help me clearing my dilemma

Iron condor-when to adjust