The truth is if you put it directly in the soil to germinate, it's slow. It could also be due to low temperature. Plus, if it was exposed directly to light, it also takes longer... Anyway, the truth is it always needs to be in the dark throughout the process until the plant seeks the light, like in your picture... Remember to keep it at a minimum of 18°C and relative humidity above 70%, ultra-low light or absolute darkness! ... Cheers, bro!