Here is our advice to your friend, from only having our latest batch of feral kittens for a mere month.

We spend simply spend time with them, hand feed them freshly cooked chicken and stroke them when ever we feed them.

Now we can pick up and cuddle Whiskers, Hissy and Felix purr and like strokes while eating and Spot is only tolerates strokes while getting chicken.

We are doing just fine with the loving approach and I would recommend it wholeheartedly to other people.