Sorry for the late reply.
I do not know the amount you can take. Are you taking medical cannabis or the over the counter kind? If you are taking the medical cannabis the people that dispense the item can advise you best, there are hundreds of cannabis items.
Volttaren creme is a common cream for pain and a prescription is needed. My rheumatologist said I can spray the CBD oil over the voltaren cream. I use the medical cannabis at night, taking half a dropper for pain and to sleep, sometimes it is not enough and I wake and take a little more.I very seldom use the medical cannabis during the day as I seem to have problems with the THC in any amount. I go through many bottles of the spray over the counter CBD Daily oil though. The weather plays a big factor with the amount of pain.I've had steroid injections and I don't think I will have anymore.There's a new procedure that freezes or burns the nerves to stop the pain but I have heard that that procedure should really be considered since the nerves could be permanently damaged. I hope you get some relief soon.