T.W.
I would definitely NOT suggest allowing your baby to cry it out. It is stressful to them and will not help them calmly "learn" to fall asleep on their own. Babies do not spoil. Food does. Babies do not manipulate. They cry because they need something. Sometimes its because they are hungry or need a change, or its less obvious like they want to be held or soothed or just dont like the situation they are in. I HATE when people suggest letting them cry...how can you ignore your child ON PURPOSE??? I think by letting him cry for a minute or two is fine. Sometimes they just need a minute to settle. My baby will sometimes be asleep when I lay him down and then he stirs and cries for 20 seconds or so and then falls back asleep. So a minute of crying to make sure they are just settling if fine. Beyond that is just stressful to both Mom and baby. And No, extended crying is NOT good for them as stated by another poster. It is proven to raise blood pressure and anxiety in babies.
The biggest thing I've learned as a Mother to my youngest (being his Mom has taught me much more than I ever thought I knew with my first 2) is to not try to force him onto our schedule. Babies know what they need and they are human beings. I think its important to see them as their own individual people who have certain needs that can change or be drastically different from previous children. I usually can get my baby to sleep by nursing him to sleep, but that doesnt always work. If it doesnt, then I set him down to play a while longer. He obviously isnt tired yet, even when he's doing the eye rub thing and you can see it on his poor little face. But I just give him a little more time. Whats the rush? Yes, I have other things to do...older kids to care for, laundry to be done, lunch to make AND a good nap for myself on occasion! But I learned that if I trust him and let him guide me instead of me trying to make him fit this mold, this whole house runs smoother and everyone (myself and baby included) are happier for it. Of course everyone's opinions are different, but I suggest letting him guide you. Give it 3 days and see if that makes a difference in your routine and your little one's peace. If that doesnt work, then follow someone elses advice, but always trust your instincts and parent from the heart. If letting him cry (beyond the 5 minutes you mentioned) is hard on you emotionally, understand its meant to be and that maybe it shouldnt be done.
*edit* I noticed someone suggested Ezzo's book about becoming babywise. This book is horrible and has been shown to be a threat to baby's health. It is linked to dehydration and failure to thrive among other things. Here are some links. Ezzo is actually being sued.
http://www.rickross.com/reference/gfi/gfi5.html
http://aapnews.aappublications.org/cgi/content/abstract/1...
I would actually recommend The No Cry Sleep Solution. Here is a link for that.
http://www.amazon.com/No-Cry-Sleep-Solution-Gentle-Throug...
It discusses sleeping through the night but also covers naps and how to make that work so you are still being a gentle parent and teaching baby in a respectful way instead of ignoring their cries. I hope this helps.
Oh...one more thing...I give you a big virtual bag of kudos for still nursing! Thats wonderful and I respect you immensely for giving your baby the very best! Yay! Thats the best I got so I hope it helps you. Good Luck Momma, you're doing great! :-)