hi doctor. i have 2 twin girls, going 2 yrs old this coming january. i had breastfed them for a month only because my milk suddenly stop. we fed them with formula milk from s26 gold up to 6 months then promil gold up to 1 year old then enfagrow up to now. can i ask what will you recommend if we will change their milk? is DHA content in milk formulas really help as stated in the enfa brands? thank a lot in advance