so sorry for the loss of your Apollo....and i am sure Trajan is grieving along with your family members.
I lost 2 dogs this year, and thankfully have one left, and she (Jemma) gets sad, we give her comfort, extra love and let her know that she is so important. You are doing all the right things for Trajan, maybe take him out for extra walks, or car rides or whatever it is that he likes to do....and hand feeding is ok, as long as he is eating.
I wish i could give more input....sending you supportive hugs....
Thanks camunki. Wow 2 dogs in one year, I'm so sorry and my heart goes out to you. It's so hard losing just 1. Thank you for your advice, that's what we do with Trajan, give him extra love and hugs and do more things with him.