I don't poke my head in here enough! I'm still nursing dd who will be 3 in April, let's see, she's 31 months old now.

She's growing up so fast! She still nurses like a newborn, sometimes stays latched on all night long, still doesn't sleep through the night, sometimes a trial but always a joy!
I guess the answer to your original question is: once baby is not exclusively nursing, getting supplemented with solids or formula, I get to be a little more lax with worrying. After 12 months was gravy! LOL Apparently nothing I've done has harmed my supply or my dd, thank goodness.
Good luck!
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Sherrie
267: Highest known weight
242.5: Weight on dd's 1st birthday

213: Weight on day I delivered dd (Whooshed past on 7/6/10)

200: Weight on day I went home from hospital after delivering dd (MET!! 1/24/11)

180: Lowest weight ever as an adult
170: Initial goal weight (subject to change)