I would try to keep the older kitty in another part of the house until the kitten gets older and stronger...and, of course, follow the advice of your vet. 

thank you for the tips! 

good luck ill say oh and give your good byes to you furnitare 

Thank you! my little kitten's now a cute, clingy cat! and yes, its partially true for me! we have three cats and i've had to deal with poop on the rugs, a broken computer monitor, etc.