you can do one but. BUT a little tip that might help in yield as my goal has always been a pound per plant under a scrog net 4'x4'.
You can try this in the future (if you already knew it well my apoligise =))
What I did to a plant and gave me 530 grms:
Veg the plant and top it once at the main steam after the 4th node. start giving it silica (see label for ratios amounts) so it can bend easily and the branches wont brake easy. So cut the top then for the next two weeks feed it silica as a add on to ur current feeding program. in like 12-15 starting bending the plant on a side by pulling it down with twine so the plant it will start growing to one side. and help her keep up with bambos (this is before going under a scrog net) THEN just [ush it a little harder with nutes so it push a bit more so one of the side of the plant will become ANOTHER TOP. So now the right side and the left side are TOPS you will get a big yield increase but you need to work that plant in order to achieve great results.
This method can be applied to any size plant before flipping it to flower mode, if is auto well is easier =)
Hope you understand what I just wrote while high as f@ck.
Good luck and keep us posted.
-Jugz