You need sewing machine oil, like f-e said, or you can try hairclipper oil, it's even thinner.
The thinnest oil might be diesel. Sewing machine oil. PFTE based. Moving to machine oils like the 0-20 .
... I have started watching the occasional youtube and a guy called Harley Smith is nailing unrooted cuttings with masses of light. Finding they will take a lot, a real lot, just as long as everything else is in place. Leading to the thinking that we have been nannying them too much.
.... You'll surely maximize it with a plant that reaches the ceiling, but it's kind of hard to predict with some seeds.
It's not the seed or the strain...
It's me as the damn Gardener... Lol
I need to grow a tall seed/plant...
I will start it from sprout in the closet with my Candy Cane Auoflower next grow...
Maybe no sidelights at all until she's halfway tall...