How to access parts while not on psychedelcis?

I tried some parts meditations on my own, but I am never able to find/talk to any part. But when I did a psychedelic trip with a large dose I encountered some of my parts and for the first time was able to see/interact with them (it happened naturally, I didn't even try to do IFS work). But I didn't have enough time to be with a part that I saw out of the distance and that might be a protector.

Now after the trip is over I can't access any parts at all like before the trip. I try to do IFS meditations on my own, but its not working. There is just nothing comming up. I also don't want to take psychedelics too often although I have mostly positive experiences with them. How can I access my parts without psychedelics?