mommy2chloerae - My suggestion for naps is to wear him. :) I used to be able to put Caitlin down for naps sometimes, but any more as soon as I lean over to set her down, her eyes pop wide open, no matter how long I've let her sleep in my arms first. So now I just wear or hold her for naps, unless she falls asleep in the carseat. That may not work as well for you with older kids, but maybe with a baby carrier/wrap you can still make that work. Caitlin doesn't nap well anyway, typically 30 minutes at a time with a 90 or so minute nap maybe 3 afternoons per week, so holding her isn't really that big a problem.
As for nights, we're struggling here too. She's not up every hour, but sleeping in 90 minute to 2 hour stretches has been the norm, and it's exhausting. I've tried eliminating dairy and failed at eliminating gluten (way too hard!) and have settled, diet-wise and for now, on eliminating milk and ice cream (including hidden in ingredients lists when I remember to check) but eating cheese and yogurt. That seems to be okay with Caitlin's belly, but who knows for sure? Last night she slept for a 4 hour stretch before then going back to 90 minute stretches. I'd like the later stretches to be longer too, but this was still very nice. I have three ideas that may explain why this happened:
1) The universe is messing with me. Just to keep me on my toes, she'll occasionally have a good night so that I can spend the next few weeks scratching my head wondering what magical combination of circumstances I need to repeat to get it to happen again.
2) Her pajamas were 100% cotton. I actually read this on the Dr. Sears website last night, so I put her in an all cotton sleep and play. Her jammies she had been wearing were 80% cotton/20% polyester, and he said some babies are sensitive to non-natural pajama fabrics. I also used the organic bamboo sleep sack instead of the man-made fleece one.
3) We elevated the head of the Arms' Reach cosleeper by removing one level of feet on the lower end. It only results in an angle of a few degrees, but we wondered if it might help with any potential reflux issues. Caitlin spits up a LOT. She's always been a happy spitter, but it's possible it was making her uncomfortable at night.
I'll repeat 2 and 3 tonight and see how things go. :)