Your adviser is correct about the LPN taking almost as long as the RN program, but if the LPN is part time and will work with your schedule, then that may be beneficial for you.
Sometimes, when life throws us under the bus, we might need to do some funky stuff to wriggle out from under it.
Finances are going to be a huge deal whether you're 18 or 33, so would you have support at home? Be able to move in with a parent or room with a friend etc.? (I'm tossing out ideas because I don't know your situation, but they're options!). Some folks still work part time while in nursing school, so that might be an option for you too depending on if you need to or not.
I feel you on the career thing though - I'm 32 and started my prereqs when I was 30; I was so ready to be done with school etc. a long time ago, but my desire for a solid career is keeping me moving forward.
I hope that you can find a way forward too