I think we are all different in many ways of what helps and does not. I will say too what someone else stated that 300 is a very low dose so you may feel better if your doctor begins to increase or adds a combo of other meds. Also since you are stiif like I am too so stiff a possible muscle relaxer you may want to ask about.
For me I am not sure what is my PN pain and what is my RSD pain or the unknown.
I will say what makes for better times is good weather,proper amount of movement, sometimes as needed meds,baths
Worse invasive procedures,bad weather,tests,too much activity,touch,wrong material on legs