You cannot permanently repair downstream damage while upstream behavior continues unchanged.

Repair does not outrun ongoing damage. As long as the behaviour producing the harm continues, every fix downstream is temporary by design, and the effort goes into holding a line rather than moving it. This is true of bodies, of finances, of relationships, and of nearly every system you are part of.

Before investing more in cleanup, ask what is still flowing in. If nothing upstream has changed, the honest choice is either to change it or to accept the cleanup as a permanent cost.