You'll probably have more luck getting help in the elimination communication forum, but here's to you for attempting to do EC with twins!
I know that laralou was doing it with her twins at some point, so maybe PM her if she doesn't respond to this thread.
I WANTED to do it, but there was just no way. Being alone all day with twin babies was enough for me to think about! We used cloth, and I tried to catch as many pees as I could (usually right after naps) until they started crawling, at which point I totally gave up. Then around 15 months, I felt like "hey, maybe this is something I could do. . . " but I think my twins were really too old to really be EC'd at that point. We did start talking about pee and poop all the time with them, and got them some little potties, and gave them as much naked time as we could.
One of them self-potty-trained at 25 months, and the other just started yesterday, at 27 months. So I think they will be out of diapers sooner than they would have been if we hadn't been having so many conversations about elimination for so long.
I'm curious as to why you're using cloth inside a disposable? That seems like all the work of cloth with the downside of still filling the landfills and the expense of disposables. . . have you considered just using cloth?
Congrats on the birth of your twins, and welcome to MDC!