Face facts! Starship will never get humans to the Moon! BUT it can do ...

No Starship or Falcon upper stage should ever deorbit. Find a nice place in space to orbit them and put an Axiom station there as well to manage the gathering inventory until used to build stations (with ship) and boosters (with Falcon). At some point, put up the now theoretical automated fuel factories - then move a load of fuel to earth and use it to start ferrying boosters to the Moon to fuel up and free return to Earth to boost lunar missions. Anything is possible in orbit with enough fuel.