wrote and I snipped:
my suggestion is: If your
baby is 8months old and teething, the best avenue to pursue is powder
formula with boiled tap
water

However, there is no need to boil the water in most places. You can give
your baby tap water in a cup during meals beginning at 6 months, so why not
make formula with it? (I don't have any experience with formula.)

-Patty, mom of 1+2