Hey there! I was in the same kind of jam you're in at seven months. So, I definitely sympathize with you! I'm new to this site also and my boys are 9.5 months. One of my twins, Elijah was like this....only he hated being on his back. So if he rolled on his back in the MOTN then he would wake up wailing! I used shush-pat to calm him and if that didn't work then I'd rock him. He was also struggling to put himself to sleep and that's only recently improved. I can say that I also tried CIO, and it was hard on both of us. I won't do it again and it didn't help any of us STTN. I don't know that I really have much advice other than to say, hang in there!
Oh, and I also use white noise. It's a must at my house. Especially now that my boys are going to bed just after 7:15ish. I don't see it as a prop because I just recently moved one of the twins into my bedroom where there is no white noise and he's doing fine without it. Hopefully he'll be going back into the bedroom with his brother soon where the sound machine is. Without it, my boys would wake at every pin drop. I'm not an authority on this, but I don't see it as a prop seeing that it doesnt help my boys fall asleep. Instead it helps provide my boys the atmosphere needed to sleep. Others may disagree.
Hang in there! And hopefully we'll both get a little more sleep tonight.