Is your snake feeding still? Are you feeding F/T or P/K? If you are not having too many issues with feeding and are feeding dead rodents. You might give thought to either injecting water into the prey item or forcing some down the mouth of the prey (lungs or stomach makes no difference) I have done this with rescues. I have also found that soaking a snake does help a bit not massively but some. (after a soaking urinates had a bunch of liquid as well as solids.) certainly not a definitive answer just personal observations and far from scientific or documented. The stress issue is a big one hard to say I think it would come down to the individual animal.