my babies (triplets) are premature ,now they turned 1 year ,can I start them with tetra pack of milk/ packet milk

A. Instead of going ahead with petrol packet I would you say the go ahead with regular packet milk because the milk in the tetra pack is quite heavy for a child to digest that this is insane short kids are premature I suggest you don’t give this milk Iyou go ahead with a regular full cream packet milk are you can go ahead with giving a tone pasteurised milk