u can use the 6 month formula up to about 18 months i think each one is different but most of them say it on the back of the can.

the toddler drinks are just like baby milo. tho i was told that a couple of those pree made up ones in the fridge is good for if they are sick and not eating. we have had them when DS has been sick and just wouldn't eat.

you can get kids cows milk. but i didn't bother as DS generally had a balanced diet. we started to introduce cows milk with breakfast at 9 months and then in the bottle at about 11-12 months. as far as i know its the lactos thats the worry so lactos free milk is a good starter too.

good luck