I need career advice

So I'm a 23 years old guy from a small college in my country. I have 3 months of credit card sales experience, then I switched to a B2B accounting job (travel industry) and I have completed 2 months here. The company is only 4 years old and it's doing pretty well. My pay is very low though.

They are making me do bank reconciliations and entries for multiple banks. Supplier and client ledger reconciliation. That's it. I don't know if they'll offer me more responsibility.

I thought of staying for one year and then try to switch to an entry level finance job. Meanwhile, I'm trying to study for CFA L1 to show interest in finance. Financial Modelling and Valuation too.

My dream is to get into an M7 MBA in the US and then switch to Investment Banking. I know it sounds impossible, but yeah.

So to get to the point, is it a good idea to stay for a year and then switch to an entry level finance job?

What kind of work experience should I build to get into an M7 MBA? How many years?

I have to pay rent and bills, so I can't even do an unpaid internship at boutique shops.