my DD2 is almost 10 months old. the past month or so i have been making up a bottle of NAN GOld HA 1 and using half on her breakfast and then giving her the other half to drink, also a bottle before bed time. the other times i am breastfeeding still.

i need to get a new tin of formula, but am now wondering if i need to get the next step up? can i stay with step 1 for as long as i want or do i need to move up to step 2?