How to move apps on SD-card to bigger SD-card without PC

I need simple steps to switch full sd card that have some apps on that sd card larger memory I need to switch from full sd card to my new 128GB sd card but i have no computer at all, no laptop as well. I only have 1 tablet Samsung Galaxy Tablet model SM-T580??!! Can I just uninstall those apps before switch and insert new 128Gb sd card, but what happens to all my downloaded music, podcasts, etc. If I switch cards can I still listen to them if I was to later insert into another media player? I'm beyond a newbie to using any computer (only have SM-T580 Tablet) If I uninstall my apps would I lose all my saved music& podcasts (there's a lot). I need to know exactly step by step info & exactly what to be aware of I'm so new to my device, new to files and even how to identify them system/mine.