Breastfeeding 6 Weeks PP

I have not been breastfeeding much at all or pumping the past week and a half. I am having to take an anti fungal medicine for my daughters thrush, and she is also being treated with a different anti fungal. The medicine I am in makes her throw up after she breast feeds. I have been pumping and dumping so that she does not get sick and supplementing with formula for the time being. I’ve noticed my milk supply has decreased significantly.

With me being six months postpartum, can I try pumping to get my supply back? Or is it too late? I have about a week left of the anti fungal and then my milk won’t make her sick anymore.