I'm at 3 months, and pretty much I'll do whatever, and I DO tandem them in public. Sometimes I'll do one at a time (you can literally run after an older child that way
), but mostly while I'm out, I have one in a sling and one in the car seat/stroller and just keep rotating one into the sling to keep them happy. I'm working on carrying one on my back (about to meet w/a very kind lady who has offered to let me try all her carriers), as it will need to be the right kind for my body in order to carry one on the front and back. I don't nurse using the sling, as I always have some soreness after I do as the latch is not perfect (for me) in the sling. But having SOME kind of sling can be a lifesaver, and mostly, my girls are happy to rotate in and out of one. Three weeks is still pretty early, but as one poster said, if you think you can do it, you can. It's pretty much about courage
(that being said, the less time they take nursing, the better). I don't use bottles, and have taken my twins and my 4 year old to our museum of science and industry by myself, successfully. We went to a b'day party as well (I knew I'd get help from strangers there). So....maybe start small, and definitely get a sling. They are magic. You could probably find a ring sling for about $8 at a resale shop. The other carriers are more expensive. I have a New Native Carrier and love it. You will find what works best for you. Happy Baby Days!