How long did it take your skin to tighten after weight loss?

Hi, im an 18 yr old male, i have been big all my life, i wieghed 364 lbs and have lost a total of 146lbs since i started my diet and exercise 8 months ago. im still dropping weight and working 80% muscle 20% fat now with my personal trainer. i already know the "think of how long it took for your skin to adapt to the fat, it takes time" im aware of that, but iwant to know how long did it take you with your experience? did you resort to surgery? thanks!