hi i have 2 cornsnakes and they are very active and jumpy. i sugest that you start handling them as soon as possible because if you dont they will start bitting you, trust me, it doesnt hurt but you never want to have an animal that you cant trust so start holding them and if when they shed it doesnt come all out at the same time then you have to hold their bodies under water for about 2 minutes (but not their heads) and when its time for them to shed again you will see a great difference
P.S if they are moving alot while in the water, hold the side of their heads slightly tight and they will stop moving