SPI bus for SD card and other slaves

Hello, I have a problem with my own designed board, It has nRF52832 and some other sensors which communicate over SPI, also I have a SD card on the same bus that works fine while I use fatfs example. I tried to merge my code with fatfs example but I faced many problems because SPI driver was initialized in my main code and also It is going to be reinitialized in app_sdc_init() function (in app_sdcard.c). Is it possible to change the app_sdcard.h and also app_sdcard.c to solve my problem? What can I do? by the way I use SDK17 and also I use 1v8 as VCC of nRF52832 so I used  a voltage level translator (TXB0108) to communicate with 3v3 on SD card.