This has annoyed me for a long time.
Why is there a maximum of 4 doses / day?
Tonight the solution struck down.
Buy one more same box but with in a different color
Choose one color red to be morning (am) and the other color blue to be afternoon (pm).
Place the red one furthest from you on the table and the blue one closest to you and you have doubled the capacity (8 doses / day)
I have 7 doses / day with 2 hours between doses so it should be good.