i reviewed this board and came to a pretty obvious but painful conclusion... you have two plants in the same 3 gallon container. now, usually one plant would probably not be rootbound.. but two, in the same 3 gallon pot... will be double the roots...

those roots will be very entangled.. and impossible to seperate.

you need to kill one your plants.. obviously the weaker one.. and i really suggest a repotting into a larger pot.. this will be to add new additional soil in.
the roots from the dead plant will decay and mix in with the soil.

take it or leave it that plant has alot of potential.. unfortunatly it just got off to the wrong start.

kill one ?? you say.. yea.. it's a cold reality... if you don't you will lose both.