It can work. With my ds1, we couldn't use it at first b/c he had such a bad latch, he kept spitting the tube out, so we had to fingerfeed to retrain his latch. After we taught him how to suck properly, we moved to the SNS, then he went exclusively to the breast. It's a bit tricky to get the hang of, but well worth it in the long run.
Good luck!
Good luck!