Your GC would not be lost for being denied naturalization due to not meeting continuous residency requirement. If you spent the majority of your time in India without an approved N-470 or without maintaining a primary abode in US, you'll have a very hard -if not impossible- time proving that you didn't break continuous residency.
You can withdraw your application by sending a letter to USCIS.
Where did your wife live while you were in India?
You can withdraw your application by sending a letter to USCIS.
Where did your wife live while you were in India?