If you're in a place that marijuana is legal you could talk to your doctor/obgyn about your options
Research shows that green can have the most harmful events mainly in the first trimester which is really annoying coz that’s when you feel you need it the most. I managed to stop for 5 months but that was because my partner was also doing it with me. I tended to try smoke 1/2 a week max after that
The stress that quitting cold turkey would put on your body could be unsafe. Reducing would be way safer.