Adding SD Card memory to root memory

Dear Forum Members,

I’m newbie to beaglebone black. i have an issue in extending the root memory. I have an 16 GB SD card loaded to beaglebone and i need to add this memory to the root memory of beaglebone. I have installed an application for my usage and when i tried to add few more packages, i found the root(boot) memory has been utilized to 100%. Kindly help me to add the SD card memory to the root memory without formatting the root memory.

root@beaglebone:/home/debian# lsblk
mmcblk0 179:0 0 14.9G 0 disk
└─mmcblk0p2 179:2 0 14.9G 0 part
mmcblk1 179:8 0 3.6G 0 disk
└─mmcblk1p1 179:9 0 3.6G 0 part /
mmcblk1boot0 179:16 0 2M 1 disk
mmcblk1boot1 179:24 0 2M 1 disk
mmcblk1rpmb 179:32 0 512K 0 disk

i need to mmcblk0 memory to mmcblk1 without formatting mmcblk1.

Kindly help me to resolve this.

Thanks in Advance