Shedding considerations for getting a second HT

[Rex99]

I'm 8 months into my first hair transplant and am pleased with the progress so far. That said, I expect I'll want to do another one to add more density. I know that I should wait 12-18 months before doing a second one. If I do plan on doing a second one what are the considerations of waiting (multiple years say) versus doing it as soon as I can after the first? 

I was told that if you do a second one within a year or so after versus multiple years then the shedding on the second hair transplant won't be as bad. Is that the case? Any advice or thoughts on timing of a second transplant would be appreciated. 

Edited August 6, 2022 by Rex99
fix typo

[HappyMan2021]

You can get a 2nd HT 10 months after the 1st. 

If its obvious the 1st HT growth won't satisfy your ultimate end-goal, no need to wait for longer.