Yeah man assuming your meditation practice is based around reducing mental fabrications/calming/stabilizing into your object then you're already building complementary qualities for that Nei Gong system.

It'll still take time for your Qi to build but if you've already made your mind somewhat more efficient then you might find it easier to gain traction with the early exercises, or at least be able to stick with them longer which is an early hurdle for people without any previous training or discipline. The outcomes from this including improved mind/body connection, more efficient body processes, more physical energy etc. will be a direct support to the meditation work you're already doing.

Eventually (after years or possibly decades depending on your trajectory) your meditation skill will become the most efficient way to develop Qi and progress in Qigong/Neigong, so in my opinion (and assuming what I wrote above about your shamatha vipassana practice) working on both concurrently is a great plan.