I'm so sorry to hear about Lily's failing health. Yes, I've had experience with this before. I had to do this with my RB Pepper because he was very dehydrated. I didn't have any help though and it can become very difficult at times. I would wrap Pepper in a towel so he wouldn't be able to move freely and then I'd kneel on the floor with him in between my legs. A few times the fluid leaked out but I never experienced any bleeding. Good luck and I hope Lily feels better soon. Here's a link that tells you how to do it correctly:http://www.sniksnak.com/cathealth/subques.html.