Nursed #1 son till 21 months, 7 of which were during pregnancy # 2.
Nursed #2 daughter till 2 1/2, 4 months into pregnancy #3. Stopped when
couldn't tolerate my yeast, her ear infections and hubby overseas.  Nursed #3
till he weaned at 4 1/2 years.  He nursed exclusively 15 months then dabbled
with solids for another 6 months. He's the most allergic of my three.
Linda (now admiring my granddaughter, 3 and still nursing)