Formula feeding

Tesla

My boyfriend has done this twice now, once with a 3oz bottle he put 1 scoop and gave it to her and just now with a 5 oz he put 2 scoops..She ate 4.75oz before I noticed it looked diluted and asked him how he prepared it. I’m freaking out thinking it’s gonna hurt her because of course I googled it. Please tell me it’s not gonna seriously affect her.