S.,
If you want to make your life easier, especially as the parent of more than one baby, GET A SLING!!! I don't mean a Bjorn-style carrier. Watchdog groups are now warning parents that they may affect the development of baby's spine and increase incidents of hip dysplasia. Find a high-quality sling that has fabric supporting all the way around baby's butt and back, and is comfortable for you to wear as well. My favorite baby carrier is a mei tai. It is an asian-style baby carrier that has two sets of straps. You wrap the straps around your waist and back, tie a knot and go. My 16 month old baby, who now weighs 22lb, still rides often in hers on my back, She didn't really come out of it, except to sleep at night, until she was about 5 months old! It was awesome, because it freed up my hands to deal with my toddler or get housework done. I could even go to the bathroom when she was tied in! It was also really easy to nurse in. As far as the stroller goes, I almost never used our double. I just put the baby in the sling, and pushed my toddler in the single stroller. I could easily have put off the purchase of our double stroller until my younger was a year old. Even now, I only use our double for day-long trips. My 3 1/2 year old usually walks and the 1 year old rides, or I put the baby up on my back in the mei tai and let my toddler ride when she gets tired.
http://www.thebabywearer.com/ has some great info and links about carrying your baby in a sling. It also has information about each type of sling. It's a big site, so it can be a little overwhelming, but it has a lot of good information in it. They have a great intro to babywearing basics at http://tinyurl.com/3kfxcm. Dr. Sears' website has excellent information about carrying your baby in a sling - the benefits, how to do it, how wearing your baby can reduce the chances of SIDS. You can find his babywearing page at http://tinyurl.com/2ealca. I love his definition of "babywearing."
"Babywearing means changing your mindset of what babies are really like. New parents often envision babies as lying quietly in a crib, gazing passively at dangling mobiles and picked up and carried only to be fed and played with and then put down. You may think that "up" periods are just dutiful intervals to quiet you baby long enough to put him down again. Babywearing reverses this view. Carry your baby in a sling many hours a day, and then put her down for sleep times and tend to your personal needs." (Although I found that I could tend to my personal needs much more easily with two free hands while my baby was in the sling, rather than while trying to juggle a baby in my arms.)
HotSlings is a very popular brand of pouch sling. Maya makes a popular ring sling. Moby makes lovely stretchy jersey wraps that are wonderful for carrying a newborn. They just cuddle down in, and it's like carrying them in the womb again, without the heartburn and backache! There are many slings online, but if you have a local specialty baby shop, you can probably find a couple different carriers. We had a new Super Target open, and they now sell Hotslings and Moby wraps! If you would like more information about slings, feel free to contact me. I make pouch slings, wraps and mei tai's, and I love to talk baby wearing with anyone who want to, customer or not!
Best of luck,
S. L
Little Roo
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