When breastfeeding twins, you have to give some formula to begin with. Just until your milk comes in though.
If a breastfeeding mum needs to give a top up of formula, it is important to put the baby to the breast first, then offer the formula. If the baby then drinks more than half an ounce of formula, the mother needs to think about her diet and how much she is drinking.
It is FINE to wean at 16 weeks, mothers know their babies best. Anyway the guidelines are about to be changed back to four months.
It was all most odd. I felt like I had fallen into some kind of parallel universe.