I'm expecting dc2 in December. Dd will be 26 months by then. She's already quite a good little walker at 21 months and I don't take the pushchair if it's just a 10 min walk to the shops or park etc but she does get tired and has a habit of preferring to walk in the opposite direction very quickly. I plan to put dc2 in a sling for the first 3 months at least, as I did with dd. So do you think by 2.5 dd will still need a pushchair for longer walks?! Do I buy a double buggy or a buggy board? Or keep little one in the sling for longer? Anyone with experience?