What should my dad do? Double consolidated into SAVE

My dad double consolidated 105k from Parent Plus into SAVE. Now that SAVE is dead, what is the best course of action?

He has agreed that he will take the debt into the grave which I am supremely grateful for, but knowing current administration, even that avenue is in danger. He is currently retired on SS (age 75) with about a 40k/yr income

At the very least, should he consolidate into IBR to be eligible for RAP before mid-2026?

Interest is accruing on SAVE at ~700 a month which I'm helping him with but it's putting a strain on myself since I have bills and a mortgage. I really don't want to pull from my retirement funds due to the power of compounding (I'm 28)