I big chopped Xmas Eve, but I did leave a few straight ends on the top. Because I was natural before (starting with less than an inch that time), I know that the hair in the top of my head is a much looser curl than the perimeter of my head. I will be waiting about 2 months before I remove those ends to give my curls a chance to grow in to make sure that what I'm cutting is relaxed hair and not just natural hair that grows in looser than the rest of my hair.
Currently using:

Poo: CON Sulfate Free poo
Rinse out: Tresemme Naturals
Leave-in: CJAOO Daily Cond
Styler: KCCC sparingly and Ampro Olive Oil Gel where needed
DT: KBB Lucious Locks Mask + EVOO/Avocado