Help with JCP please !!!!!

[sedecatur]

My son dropped off his adult Carpet Python and cage to me 2 days ago. He had to move out of where he was, so i have the snake for now. He's acting fine but wont eat. It had been 10 day since he ate when my son dropped him off, Now 12 days, I've offered him food several times over the last 2 days F/T large rat, which is what hes been eating without issues. Now the snake is starting to get the faded milky tone to his skin so i'm sure he will be shedding soon. So my question is, Is he refusing to eat due to the combination of the move and the upcoming shed? even though hes still in his own cage (I know new smells, people surroundings etc.), or should i be concerned that there maybe some underlying reason? Oh, He is usually fed every 7-10 days, but where he is at 12 days now of not eating How long untill i should be pulling my hair out due to worry??? Thanks for any help you can offer