I am sure you could survive a marathon with a more rapid progression and check that bucket list item off. Or, you could develop a habit that you gives you greater energy throughout the day. It does not need to be a painful chore.
Your 'engine' will quickly adapt but the supporting drivetrain needs a lot longer to strengthen. Bones, tendons, etc. take a lot longer to adapt. When this is rushed, that is when things like PF, sciatica, knee pain, etc., flare up.
The whole key to the marathon is to make running easy on your body. To make it easy, it must become part of your consistent lifestyle, something you do automatically. Avoid doing more on any day than you know you could repeat the next day. Keep your body and your mind 'wanting' for more. Start with an amount that you know you can run with good quality, feeling strong with good energy. Train your mind to associate running with feeling good and your body with moving powerfully and with assertive (proper) technique. Repeat similar daily loads for at least 4 weeks, then step up maybe 5 minutes per day. Rinse and repeat.
It sounds slow, but look at the big picture and realize if you start with 1.5 mile and 20 minutes now, you could be at 60 minutes in 8 months. On top of that, you'll be running those 60 minutes fast, feeling awesome, and you will still have great energy for anything else you want to do every day.