I think they’d drink up the nutrient solution but I’ve never tried it TBH. I just feed mine flies when they’re available. I do think humidity can be a factor so keep an eye on that, but I think that’s more of a matter of keeping the plant well watered. Mine seems to fill the pitchers as they grow and also seems to keep them topped off.

Point being, I just feed mine flies and water it regularly and that seems to keep it happy. I don’t mess with it much outside of that.