Biogaia question

Hi parents who are giving your baby biogaia drops, I have two questions 1. How do you effectively put exactly 5 drops of dose for your baby? When I tried to tilt steeper, the drops came out too fast and it’s more than 5 drops. If I don’t tilt it steeper, the drops flow back to the bottle 2. If accidentally put about 6 drops on the spoon, would you throw away or just feed the baby? My LO is 3 months old 3. Do you put the drops in the milk or directly onto the baby mouth to feed? Thanks