M.A.
M.,
First of all, congrats on your pending delivery! I have a two year old daughter who is dealing with these same issues. She is my first so I'm still trying to figure this out as I go. Potty training has been a sometimes thing for us so far. I wouldn't worry about it too much just yet. As long as you're introducing it and giving him opportunities to try, that's what is important. He'll take to it when he is ready.
Pacifier, well, we're still doing that too. We HAVE restricted it to bedtime/naptime and make her put it in her bed when she wakes up. She whined for a day or so at first, but then she accepted it. I think we'll probably start taking it away for naps soon.
Sleeping, she sometimes comes to bed with us when she is not feeling well (and when we are too tired to get her back down). Is he still in a crib? On nights when she does wake up, most of the time she just needs a drink of water or her binky back and then she will go back to sleep. If he is still in a crib I would go in and comfort him without picking him up and get him to lay back down and then just leave. He might cry a little bit but eventually he'll get the idea and go back to sleep.
I hope this helps. Good luck!
M.