depending how u ran ur diet and ur macro split ur metabolism could slow down. a good way to avoid this is to refeed every 7-14 days (depending). personally i ran 950cal deficit for @6 months with no probs. i did a refeed every 14days and ate 100g carbs per day otherwise.
carb cycling is another effective way to avoid metabolic slowdown. 3days per week i effectively ran a 1400cal deficit with no probs. the tdee formulas we have are good guesstimates. they are just that. guesstimates. u have to establish ur true maintenance cals thru trial and error and experience.
for myself i would not run 500cal deficit because i have done well with a greater deficit.. i cut for about 7months with significant deficit and have since adjusted diet to where im now eating between 2800-3500cals per day with minimal fat gain over a 2 month period...
thinking is a good thing

just dont over think!
