Here is what I found through searching. [0] Another author did also warn against the assumption that increased THC smoking -> increased psychosis chance. [1] It needs to be studied more, but so far we have found some possible links.

[0] https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0...

[1] https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0...