Hi there,
6 months is very young to be expecting this. All children are different but I have found in raising 3 very independant children that 'over' soothing and let them push you away when they are ready.
My best advise for bedtime is get a set routine that either you or your husband does (so when you are working it will still work). Almost immediately after dinner, bathe him and bring him into your bed pick out a couple of books and wrap him up in your arms and read to him. At this age he will probably fall asleep, then take him to his bed, and do a little 'night night' routine with him say goodnight to all of his stuffed animals and tuck them in with him. Turn out the light, and then say a prayer over him, with soothing things in your prayer, asking for God to watch over him especially, and that he have sweet dreams (that kind of stuff), then kiss him and say good night and walk out of the room.
The more cuddling and attention you give them when they are young the less they will need when they are older, and they will be confident self assured children and adults.
I know it gets old but I promise you it won't last long enough when he is older you will be amazed how fast the time went and you will want it all back and more.
Try to initiate cuddle times instead of him always being the one who does so, this is another way to let him know that you need it too.
Allow your husband to understand this as well, because usually men are not raised this way.
Additionally, let him keep the pacifier basically as long as he needs it. I promise they won't walk down the aisle at their wedding with it! But, if you take it away to early, they will develop other worse social unacceptable habits, some like nail biting, or self rocking, or worse, all stem from lack of soothing when infants.
If he likes it for a long time, just yank it out of his mouth when he is talking, and then keep it just for naps and bedtime, or often when they get hurt they want it to calm down. It's ok, my oldest kept his till almost 3. But my second child liked her fingers better and we paid for four years of braces. You can ditch a pacifier, but not a thumb.
Best of luck and enjoy every minute of the time you have, this time invested will bring you a happier healthier, and more loving and kind child.
S.