I’d advise against setting a hard timeline like 6 months and instead focus on finding something that is interesting and you can devote free time to.
I started out in software sales a decade ago and realized it wasn’t for me. I learned basic web dev at home in my free time and got my first dev job after about a year of building stuff at home. I found a path that was sustainable and cultivated my interest, which is the most important part of career switching imo.
Also, working in an office for a few years was invaluable, I had to do it to get the experience that has allowed me to work remote. If you restrict yourself to remote jobs then you are cutting yourself off from vital opportunities and experience.
You could however apply for roles at places like Johnson&Johnson and Medtronic as a “sales rep”. Their reps actually have a pretty good deal. You don’t necessarily have to have medical training if you can bring to the role other relevant experience (like working in biotech) these companies are probably good places to get some niche insight, and experience that could lead to something in the convergence between healthcare and AI. Johnson&Johnson have orthopaedic robots etc. Robotics in medicine is actually a pretty big industry (tho some places are slow to uptake on the technology). Those big companies also have pretty good working conditions for their staff like flexi hours, company cars, at least six figure salaries etc. One of my friends who works for Medtronic gets 3% commission on every medical device she sells which if you’re familiar with the cost of medical devices/consumables is A LOT of money… (just a breast implant is about $5000k (depending on your currency)). You probably wouldn’t get to work remote straight away, but depending on where you started and how you progressed in the company you could find yourself in a good role.