Warmup settings for personal/real accounts?

For my child accounts/fake accounts I usually add on +35 followers a day to the cap until I hit ~850 followers per day.

I also grow accounts for clients/friends etc. These are real accounts, with real posts, from a real person who's been using it for a long time.

In this case is it still necessary to warm up this slowly (across a period of ~3 week), or can I warm up faster/not at all for the purpose of satisfying the client?

You should do the warm up thing too. And care about a good proxie, take on near to the location where your friend lives.

850 per day seems unreal! How many are you currently managing to follow a day? Has it got harder with IG tightening up recently?

I guess with huge follow numbers like that is not possible to unfollow at the same time?