Wat kind of milk powder for 1 yr old

[Alaska]

how u do a switch from 1  brand milk powder to another?

Firstly, when the current milk powder is about 1/10 finishing soon. You start to buy the new brand. From then on, all milk serving will have to mix. Begin with 10-90 mixture, 10% new : 90% old, then increase to 20-80...and so on until you reach 100:0 ratio. When you have totally reach 100% change to new brand.