The health benefits of follow on milk are really debatable.There is a certain amount of iron in cow's milk.If you fed your one year old milk only then no they wouldn't get enough iron from cow's milk alone.Iron is also found in many other food sources naturally.If you feed your one year old a full balanced diet there is no need to continue feeding them formula past a year.Vitamins and minerals found naturally in a balance diet are of greater value than those given artificially in a formula.
Lactose is found in all milk products,except those that are lactose free.Formula is made with cows milk,and a whole lot of other stuff added.Lactose doesn't cause an allergy.Some babies are allergic to lactose,in which case they would be allergic to normal formula except lactose free(Wysoy and other similar).They may have excema,don't gain weight,genuine allergy.Some have an intolerance which becomes more obvious when you change them onto whole cow's milk,and they often grow out of,which is what my 2 year old has just about done.
It's also worth bearing in mind that a lot of the information you find in these magazines is sponsored by a certain make of formula,most are making 1+ milk now.That ad with the giant cup of milk is just one ad we're also bombarded with.What they don't mention is the higher amount of sugar these products contain,which is why the babies like them so much.There's a lot of money to be made in telling mothers their baby NEEDS something,cos we all want what's best for our baby.
As answer to the original question,I would make sure babies eating lots in the day.My ten month old has breakfast,dinner ,tea.9 oz bottle mid morning.9 oz bottle bedtime 8:00.Wakes at 7ish in the morning.If they're getting enough food,they shouldn't need milk in the night,it becomes a habit.Offer water and a quick cuddle if she wakes,but back to bed without too much attention.Try and get your baby to settle themself.As you put them down give a particular teddy each time,so that that toy becomes a sleep cue.If they do stir in the night if they have that toy nearby they will learn to settle themself.All my children have had one or more sleeping toys.Also have a consistant routine through the day,and a good bedtime routine,all those things help.My children all sleep very well,they always have.Which means I do too.
Hope you have some luck with your baby