How long does weaning take? My LO turns 10 months old tomorrow so I was thinking of dropping a feeding and replacing it with formula feeding in the Zoli cup. I honestly don't think he'll mind -- he's always excited to get the Zoli cup and get formula -- and I suspect I'll be the worse of the two of us (both with engorgement and just emotional issues with weaning).

Should I wait another 2 weeks to start the process? I want to wean him by his 1st birthday (ideally, breastfeeding him for the last time on his 1st birthday -- don't know why but I read someone else who did that and it stuck with me as a niceish thing).