I didn’t start tucking leaves until around Day 25 of my plant’s growth.
Here’s an example of before and after where I tucked the big fan leaves underneath the growth tips and exposed them to the light:
The branches starting underneath were about an inch or two in length which gave me enough to work with to be able to tuck the large fan leaves under them. First pic it was a little too early to do so, but about a day or two later I was able to do it.
It might not play out quite the same with your plant, however, because I topped mine and it allowed more horizontal growth, but there will come a time where you will be able to tuck leaves underneath newer growth just the same but just in a different way. Keep us posted on the forums with your plant’s growth and maybe we can help when the time comes