Pre-Service Debt and taxes

I have been in the service for about a year now and joined with pre-existing debt from college and credit cards ~20k. I'm already in the works to use the SCRA Benefits to help lower those rates.

What I'm most considered about is that I just got hit with 1099 taxes (from jobs I had before I joined) from 2023 and a smaller amount from 2020 that the IRS expects me to pay off now.

I'm looking for advice on who I could contact to help sort out some type of payment thing or offer assistance. I of course would pay off the debt but currently at the E3 rate there's no shot I'm paying off those taxes that are like double monthly paycheck lol (~4k is owed to the IRS)