You'll swallow the second quarter when everyone sleeps during a night Nick sleeps at home. When you go to the sofa, you will have an icon offering to swallow your quarter. If it does not appear, try to advance a little time.
The third quarter will swallow later in history, in the bathroom, in the same way. Late at night when everyone is asleep, if you go to the bathroom, you'll have the option to swallow a quarter of the pill.
Finally, later, Julia will want to test the goods. Looking good, you will have the option in the discussion with Julia to give her the remaining quarter.