Soledad, it is good to see you back.

As to the kneading, I am of the opinion it means several things, and the one I think relevant here is for security/comfort. I don't doubt Boo has been stressed by the events of late. He might be kneading to bring about a sense of calmness that he might not otherwise be feeling. I think by giving him extra love, trying to stay in a routine, extra interaction, and he will pull through. As a human, you had a ton of transistion. Imagine him as a kitty, going through the same thing, and not quite understanding it the same. Pretty traumatic. As goofy as this sounds, have you tried mentally connecting with him, using images instead of words, to let him know what is going on/has gone on? I have had people swear by it...and also, the feliway stuff, might be worth a try.

You all have been through so much. And, best of all, Boo is with you! Maybe a picture or ten would help us here at PT!!!