I'm so sorry for your devastating loss of darling Mitthu. It's never easy to lose a beloved friend, especially when they have meant so much to us for so long. It's obvious you cared for him very much and I know he knew that during his time with you.
Remember, he will never truly leave you as long as he remains in your heart.
Fly high, sweet Mitthu. Rest easy among the stars
My warmest thoughts to you during this difficult time.