6 Month Old Sleep Trouble.. Please Help!?

First off swaddling at that age is just crazy, so give up on that!
He is too strong and moves too much to have anything hold him.

Second WHITE NOISE! It saved my life... We have a fan in our kids rooms in the summer and a humidfier in the winter. Get a cheap one that is noisy!
You will be shocked how much it helps to drown out any outside noise and he can fall asleep and stay asleep!

With my youngest (10 months) I rock her while feeding her and then lay her in bed. She does cry a bit, but I walk straight out of the room and she gives up after a few minutes. We do have a crib aquarium light thing that plays music and/or bubbles that I turn on as well. Lights up the room and gives her some other sounds to hear for about 30 minutes. We also have some books and a few hard toys she can play with until she falls asleep on her own.

Also DARK! We make sure both rooms are very dark.... we do have night lights, but for the most part the room is pretty darn void of outside light.

This will pass... it takes time for sure. Just keep at it and he will get it. But give the white noise a shot! Best advice I was ever given!

keep up the routine, he will eventually get it. but right now he is discovering new things and wants to be awake for it (even though he is very very tired)
I wouldnt worry about the naps, if he naps for 30 mins, just give him another nap in a couple hours. However at night time, he is old enough to sleep 10 hours on his own without waking. (my DD did it at 4 months)
When he wakes up, try not to go in right away, give him 10 mins (and you will need to set a timer for it) go in and check on him to make sure he is ok, stay in a MAX of 2 mins and leave...even if he is crying, they set a timer for 15 mins and repeat. next is 20 mins. It shouldnt take long. It will be a hard couple of days but it will be the BEST thing you ever did.
Also put a fan in his room so there is white noise. also have a small night light on.

First, I wonder if you are feeding baby foods yet? At 6 months my lil one ate 3 times a day, 2 jars of baby food and some baby oatmeal cereal at each sitting. Plus, I was still breastfeeding her 4 times a day. (I assume that a growth spurt was the main reason because she doesn't eat that much now at 9 months!)
Second, my daughter also began teething then which made her allergies so much more awesome (runny nose, drooling, cranky, YAY!) Her one and only tooth took FOREVER to actually cut. I gave her 2 Hylands Teething Tablets before nursing or eating. She was much happier and a better sleeper once we realized how hungry and uncomfortable she was.
Third, make sure that when your baby is awake that he gets enough exercise. Put him on the floor and let him play.
Last, when it comes time for sleeping/napping, I usually hold her for a couple minutes and walk/sway back and forth. (More to soothe her.) Then, I lay her down and walk away. If she cries for more than 15 minutes, I get her. That has happen maybe a handful of times because she pooped, but generally, she falls asleep within that time frame.

week 26 is a wonder week. Google it.

Believe it or not thiis will pass. In the meantime what I did for my son on hard nights was bathing him in a lavendar smelling bubble bath then using a lavendar lotion. Change your routine. Even though yours is still a baby, read to him in a calm and relaxed voice. The lower the voice tone the better. Shut off the lights and sing to him softly. Worked like a charm for us. My son is now 4-1/2 and we do the read then sing routine and he is out!

I used modified CIO, going in to comfort every 5 minutes. I would not pick my sons up or feed them to calm, just rub and sing or talk softly till they calmed, and than i would leave. If they started crying again I would wait another 5 minutes and repeat. I never had to go in more than once, but I started this at about 1 month, so it came really naturally. Starting later may mean other habits have to be unlearned before they can successfully learn to self sooth, so just be consistent and keep giving them 5 minutes at a time to learn. He will get the hang of it.

Hi S., baby's toddlers sometimes go through different sleep paterns. All of my daycare parents that have come through my daycare have shared with me that their baby;s didn't sleep well while they were being nursed and once on formula and a bottle they started sleeping through the night. I bottled fed mine with Simulac with iron and my 3 slept through the night from 6 weeks on, but I rocked them to sleep and I didn't put them down awake and once they were asleep, I didn't go get them back up if they woke up and cried, I checked on them, but that doesn't usually become habit forming like feeding them in the middle of the night, or picking them up all through the night. Using a fish aquarium in their rooms are great. Hope this helps. J.