so sad for you and your lovely boy.
I hope you are able to have a 'saying goodbye' time, with cuddles and all the love in the world
I know it is a burden to have to make that decisain about when the time is right, but you do have the opportunity to make this time comfortable, secure and special for both of you, so that your boy goes to sleep peacefully and knowing how loved and adored he is.
sending hugs to you and positive thoughts
Bens mum