Has anyone used an SNS who can offer some tips on using it? LO is making progress with BFing but she's still getting frustrated. I'd like to use the SNS again, but I have such a hard time coordinating getting it in her mouth along with the nipple so that she's actually sucking on it. The YouTube video I watched said to pop it in the corner of her mouth once she's latched, but I can't get that right either. I need more hands. Also, the stupid thing leaks around the lid about half the time. I think it could really help, but I can't get it right!