Don't listen to any BS.
1. Buy a newly farmed account (60 days or older)
2. Make sure you use 4g proxy and let the acc marinate on it for 42h
3. Follow a strict posting pattern: (scroll the feed for 5 mins, stop and actually watch videos, then scroll the feed of the sub you wanna post in for 5 mins, not necesary to watch vids, then, just post (make sure to NOT coppy/paste the title or body text and always remove the hash/metadata from pics if you use any, also slightly crop them each time for re-use)
4. Enjoy
There is no need to warm up a farmed account (that has posts/comments in the last 30 days).