I always took the pram and the ergo shopping, walking etc. With DD1 especially I usually found myself wearing her and pushing the pram more than 50% of the time. Sounds silly, but having an empty pram was great because I could put my shopping in it, rather than juggling arms fulls of stuff.

I certainly found around the 3 month mark when they were so much more interested in what was going on around them and sitting up that a pram was useful.

I stopped BWing mainly because of the heat whe they hit the 5 month mark. Both my kids are hot little bods, and even just nappies and tshirts they were both sweating in a sling by November.