The phrase "started planning for" is correct and usable in written English.
You can use it to indicate the beginning of a plan or process. For example, "We started planning for our vacation six months ago."
Steinman started planning for the end.
Six weeks ago, he started planning for this night in case the Cardinals reached the Series.
Well before the war had ended, the allies had started planning for the peace.
I started planning for the Olympics a year or two ago.
He also said that most hospitals and many local health departments have not started planning for vaccinations.
Last year, as Mattucci started planning for the anniversary, he contacted a collector he knew and asked if the collector had Game 5.
The latest crisis was set off by reports on Tuesday that Israel's housing minister, Uri Ariel, had started planning for about 20,000 new settlement homes.
When EDF first started planning for Hinkley Point in 2009, executives thought they would have the E.P.R.'s plugged into the grid by 2017.
Shines returned to Indianapolis, where after a few years of unrewarded minor league success he started planning for a post-playing career.
But he pitched Friday, too, and Randolph said he started planning for Sánchez to come in once he decided to use Heilman in the sixth.
The couple married, moved into a house with a $6,000 monthly mortgage payment and started planning for a family, the Orange County Register reported.
