Hey there....we have a lot in common...!!!
My ds #1 is 2 and a half, ds #2 arrived 15 weeks ago. Before the baby came i really put a lot of effort into trying to get Tom to go to sleep on his own, I would sit at his door until he fell asleep, after a few weeks I would leave the door and come back to check he was alright. once the baby came, he would get into his bed and tell me to "check the baby mommy", and thats what we have been doing for weeks now. We went home to my parents for a week over christmas which set us back a little, for example last night I had to stand at his door again....but I know within a few days we will be abck to "check the baby...".
I say "I" here as I am the one who puts him to bed, dh works the weekend night shift and ds is very attached to him so I thought it best that I do the putting to bed, at least that way, especially at the weekends, things would always be more or less the same at bedtime.
Our problem with night wakings began during the summer. He would go to bed at 7 and at about 3/4am come into our bed. DH would then take him out of the bed and back to his own bed and 9 times out of 10 fall asleep with him!! At the moment we are still enduring these night wakings, I have tried putting him back into his own bed and he invariably wakes up and comes back to us. The more putting back to bed we do the more upset he gets and I dont want him to scream the house down with ds #2 sleeping through the night. So I guess I am in the same position, I also then have the added joy of practically being on my own from thursday night until monday morning becasue of dh work, I must admit I usually let ds #1 climb into bed with me on these occcassions as I am too tired to start the bed battle.....
So I know we have a decision in this house to make, do we continue as we are, or really put the effort in and get him into his own bed for the entire night. As I struggle with this decision I tell myself that mat leave will soon be over and whats worse, before I know it my two darling boys will be all grown up and wont want to come near mommy and daddy's bed for cuddles and sleeps, I have never heard of a 12 year old sleeping with their parents!!!!!
I dont think I have been any help to you, but lots of hugs and luck as you tackle this problem xx