i have had a few feral cats in my lifetime. one needed 5 years, the other came around quicker. but don’t force yourself on them, let it be on thier terms. that’s a cat’s way. it’s great you took in a feral cat, bless you!
do you know anyone that can reiki? that helped both mine come around. the one that i had for 5 years, came around immediatly after one reike session. it impressed me enough to learn reiki, and i used it on cat #2, which came around faster than the first cat….. he’s only 6 years old now, and i still see improvements in him. he loves me, he is just unsure of other people and usually hides when they come over.