Sore Heel/Achilles

[AFL MAN]

I am 15 and I play in brisbane. I have a disease in my foot called severs. Apparently it is pretty common in tenagers. I have got new orthotics as the other ones didnt work. I am still getting pain which is affecting my performance. The podiatrist said that it wont cause any more damage if i play on it. I cant afford to take time up with qld try outs coming up. What can i do 2 stop the pain???