I also voted no. He will let you know when it is time for more tests and more vet visits. Enjoy every minute with him as he does with you. Positive thinking is amazingly powerful. I feel that both you and Killian will just know when the time is right. But,like Logan said, we support whatever decision you make. The fact that you are thinking of it again may be a sign... Gool luck and my prayers and thoughts are with you and Killian as always.