Like everyone else here, I am so sorry for your loss. I can't imagine how hard this must be for you. My 4 1/2 yr old Trace stopped wanting to eat on 1/17. After several vet & specialist visits, ultrasounds etc. he passed away in my arms 9 days later. That totally ripped a hole in my heart. I cannot imagine losing one as quickly as you did.
I can tell you that the pain does eventually lessen. We brought a new pup home in July and he has brought laughter back into our lives. I still find myself crying for Trace, and probably always will.
I know my boy Trace was one of the first to welcome your Indie to his new home!
Prayers and hugs to you and your family