Use a low toxic and “safe” paint stripper to remove old paint.
I recently used a few “green” products to take off stain from a wooden table. It worked ok, and did not harm my hands and hardly had any smell. I find this was fine for the small project I did

These are pictures of a “toxic” paint stripping project i did a few years back. Notice the several layers of paint coming off the older wood door frame.

Pain stripping project