How many of you have had youre Balls go off feed for a while, after moving it to a bigger enclosure?

( I UNDERSTAND THIS IS NORMAL AND THAT THEY GO BACK ON FEED AFTER A WEEK OR SO) but i have a female that was eating everything i threw in and has now become extremely picky after i moved her from a 10 to a 20 gal. About 8 weeks have passed and ive only been successful about 5 times whereas before i could put 2 to 3 rats in her a week. I do not have a scale but i know she can take big-small rats and small-mediums. Ive been told Balls stop eating as much as they grow.T/F?

I feed live but i havent found any bites or scars on her which could've deterred here from eating rats. But when food is offered she displays a behavior where she seems intrested, follows the rat until cornered and coils but cowards if the rat approaches her and becomes disintrested. ( comparison for old school gamers: sort of like the ghosts in the SuperMario games)

a Hide was provided in both tanks and I also switched from t-rex desert white to Newspaper and a bigger UTH. (just in case those things factor in too)

thanks for taking the time to read this i know each week there are more and more posts with people having thier snakes going off feed.