How much should i invest into my 401k/457b as a 32f with 130k salary?

Additional info that is important: Due to other life factors I am getting started late with saving for retirement. I have a massive pile of graduate loans from two degrees that I am currently working towards pslf in 10 years (healthcare worker for hospital System). I am on income based repayment plan that is 10% of my income. I have a very supportive partner who pays for most things including our house. I pay for some Utilities, groceries, my car, and student loans pretty much currently. Just st