rickman, you sound just like me, except I had big age gaps between my four so rather than have loads in my bed for a short time I've had one at a time for years!!!
Agree you must be firm. BUT it is so horrible. My DD (I've posted on other threads in desperation) has for the last two night been put to bed and then if she cries we just go up and sshh sshh and then out of room. She has cried for a bit and it has been horrible, but last night she only woke up at 12.30am and was asleep again by 1.30am and it wasn't all screaming and crying some was just moans and groans. We're sticking at it.
I know how you feel though. It is well miserable isn't it - x -