Before I use to do them at week 2 and would just shove them inside the pot with no worries I use to hear the roots ripping lol .. worked well for a long time but recently I did it and my plants hermied.. I don’t know what was the cause so just because that could of been one of them.. now I transplant and stake before flip but don’t zip till week 2.. if this round hermied I can chalk it up as that wasn’t the reason... and go back to old ways