Weaning very quickly?

So my LO is 3 months old and has been exclusively breast fed with the occasional bottle of expressed milk since he was born. We have had a few minor bumps in the road, but over all breastfeeding has been going very well. He is gaining weight and growing wonderfully and my hope was to continue our nursing journey until around his first birthday.

Well, due to some health concerns of my own, it sounds like I’m not going to be able to continue nursing. I have to start some new medications and we are having a hard time finding some that are safe enough for nursing (some say they can be used but there are risks involved and I’m not too excited about that idea)

So, does anyone have any tricks out there for weaning very quickly? Especially for the engorgement, I over produce and I know if I have to stop it’s going to be very painful 😐 and of course this is right before I go back to work!

Thank you in advance!