Patients is a virtue cannabis seeds take longer to germinate lol. A warm environment helps if it is only like 70 degrees it will take longer but give it a week you should see some fungi growth they have no choice but to eat as long as you inoculated properly. Like if you injected the spores while the jars were still hot you would have killed them. But don't worry just because the syringe looks like it's full of just water don't mean a thing but they don't use as much as my homemade spore syringes but mostly I just use spawn but I grow a few types of mushrooms.
It is difficult to see early germination especially on non agar substrate. Relax. As tamper said, if you didn't inoculate too hot and if you actually saw even a few specks in your syringe you will surely get something.