Come to think of it, I think I know what helped Nina sleep better. We moved her into a different bedroom at around 8 months, and that's when she started sleeping through. Dunno if it was a coincidence or not though.
Can you do that at your place?
Maybe give that a try Leasha. I moved Jack into his own room at 6 months but it hasnt made any difference. No better....no worse. But anything is worth a try, you never know it could work for you.
Just remember, when you are sitting there in tears in the middle of the night...there are plenty of us doing the exact same thing, you are not alone. {{hugs}}