When Ves figured out some suitable energy sources to sustain the growth process, he did not immediately implement the entire plan.
He had a feeling that once he completed his mother's spiritual construct, something drastic would happen.
He didn't know whether his mother intended him to create it before the battle or during the battle. If it was some kind of means to allow the Oblivion Hand to reach his position, then it was best to make it straight away.
However, if it was some kind of superweapon that could disable the Gravada Knarlax in an instant, then Ves was better off holding off its completion until the pirate warship finally came within engagement range.
Considering all of the possibilities, Ves opted to make the safest choice and hold off until battle commenced.
Until then, Ves only started the growth process but did not feed the huge amount of energy needed to complete the growth.
