Quick, I need help figuring out this dose for TD-DMPS

[Guest guest]

Sorry, I'm such a ditz sometimes, but I can't figure this out clearly in my head

this late at night. If my son is prescribed TD-DMPS 27 drops every other day,

what does that correspond to every 8 hrs. for 3 days on/4 off? We started at 1

drop and progressively have increased. Last weekend we did 8 drops. How high

do I go???? Math never was my strong point (obviously!)

Thanks to anyone who can help me quickly!

Jen