Need genuine advice – Commerce grad, no studies for 2 years, targeting RRB PO/Clerk 2026 or IBPS 2027?

Hi,
I need some honest suggestions. I have a commerce background, but it’s been two years since I’ve practiced or studied anything properly. Now I want to get into a banking job.

I have a few specific questions:

1. Is it realistic for me to crack RRB PO or RRB Clerk 2026 given my situation? Or should I skip 2026 and prepare entirely for IBPS PO/Clerk 2027?

2. I was an average student back then, and my basics were not clear. Right now, I’m watching a complete YouTube series to clear my basics in Quant, English, and Reasoning. Is this a good approach?