HELP. WILL MARK BRAINLIEST. HOW MANY DO I DRAG FOR THE CORRECT ANSWER?

Youre looking for between 3 and 3 1/2, so you want to change 1/2 to match 5/8, which would be making it 4/8. so next you just add glasses of milk till you reach 3 and 4/8,
5/8, 1 1/8, 1 6/8, 2 3/8, 3.
making it 5 glasses of milk.