It takes time to heal and accept reality. My nonno (grandpa) passed away in 2019, and it was difficult, almost like a father to me, the best man I've ever met.
I cried a lot and dreamed about him constantly. Until I had to accept that there was nothing else I could do. And be grateful for all the years we shared together.
I guess he wouldn't like me to remember him with sadness. I have a photo of him in the living room, where I can always see him.