Should I wait (THC FLOWER)

Just got a new job. I start next week. There was no pre employment test, just a background check. it’s a multi site maintenance position where I will be entering various businesses, some medical facilities or local government offices. In the handbook it stated something along the lines of “some clients may require additional background checks, fingerprinting or drug screens for site access” but my interviewer only mentioned fingerprinting when I asked him about the onboarding process (I did not ask specifically about drug tests obviously). I’m a very light/occasional user and got excited when I was offered the job so I could start indulging again since I had initially quit temporarily in case of a pre employment screen. Should I wait for a few weeks after starting to see how things go or do you think it’s safe to indulge now?