Before you start messing with the manufacturer's recommendations, make sure you read what is Part A. Don't reduce it unless there's nothing in there you want the plant to have. Cut it and you cut all the ingredients.
Post a pic of the "guaranteed analysis" on the back if you want folks to chime in!
Nice! Tell mother nature to cooperate.
What Bill said ↓
Or even later for outside. I'd transition about halfway through stretch.
I do since it was my recommendation: magnesium nitrate! Cheap from most nurseries and balances the Mg while correcting the nitrogen in MC.