I Have Problems With Platelets I need a surgery to remove the spleen?

Greetings,
i Have Problems With Platelets – I was told it is PTI or IPT purpura thrombopénique idiopathique – idiopathic thrombocytopenic purpura
i was taking a treatment MyFortic + Prednisone but the Platelets did not raise they are below 10,000 about 8200
i was told that i need a surgery to remove the spleen.
is it the 1st step to make it ? as i was reading i saw maybe it is a cause from vitamin C i did not do a vitamins blood test

is there any other ways or something to prevent the surgery

​thank you