When my dad died unexpectedly 3 years ago, I was surprised by those who reached out and offered support, and those who didn't.
For instance, one cousin, who I'd always felt quite close to never said a word, at any point. Yet the wife of another cousin, neither of which I was close to, bent over backwards to offer support, and checked in with me often in the months that followed. I hadn't had much time for her previously, but she grew hugely in my estimation after that.
I think grief is a very personal thing, in that everyone experiences it differently. But I learnt that every thought, feeling and emotion is completely normal.
When dad died I went through a couple of months of very intrusive thoughts (mentally replaying what mum said to me on the phone when she called to say he'd died in the night). It took confiding in an older and wiser friend to tell me that of course intrusive thoughts were normal. It was my brain's attempt at processing the trauma. And from then on, once I realised that, the thoughts almost completely went away.
Dad has been gone almost 3 years (2 years 10 months), but I'd say that it was only in the last few weeks really, that I've stopped thinking of him every day, multiple times a day.
Grief is a long process, and it isn't a straight line through it.
And you don't believe it when you're right in the midst of it, but time really is the very best of healers. And it does get better.
Sending you love if you need it OP.