Breastfeeding while using cannabis

I have a now 4 month old and I breastfeed. I smoked my whole pregnancy and I haven't quit.

I feel freaked out because when I research, it only comes up that there's not enough information or studies.

My son was born with the cord around his neck and had swollowed his meconium we were life-flighted to the NICU and stayed there for weeks, he place in a category for mild brain damage.. I'm just afraid that maybe I'm not helping his neurological stance.. right now, any advice would beb helpful, because if I have to quit I will but I don't see a difference in him and he seems like he's doing great. We do physical therapy every week.

we also just had a meeting with the neurologist and he said that he was fine but he also said that there might be a small chance that he could end up having slight cerebral palsy