Hey , yeah i had a twin also, free plant right? well mine died randomly about 3/4 of the way in and a few weeks before harvest... in the end it took up space. i'm not going to try that again , at least not in the same way, but power to you if you're doing it. One thing i would do is seperate them in different pots though : roots fight for nutrients . yours dont really seem too bothered yet, though. Let's see what happens ! π