I am still using First infant SMA formula powder, as I gather there are no nutritional benefits to moving to Follow On formula. The tin says I need to use cooled, boiled water... But is that just for babies under 6 months or do I always have to use boiled water? It's such a faff having to boil the kettle in advance and am getting tempted to move on to the much more expensive ready to pour stuff. Not sure if there is something about the First Infant formula that requires the water to be warm?