Wrong formula milk

I have a one year old and a 2 month old babies.

Last night, my husband mistakenly fed my 2 month old baby with the formula milk that was supposed to be for my one year old (nan optipro 3, but yhe measurements of the scoop and water he used are for 2 mos as per chart. It's just the powder that was differently used). Will this harm my 2 month old baby? He drank about 80ml-100ml. Im so worried and stressed i couldn't sleep thinking about it! :(