Everything from 3 times a day to once every 3 days is normal. It depends on how much you eat, how much of it your body can absorb, your fiber intake and some genetic variance too.
Your intestines aren’t a conveyor belt, things don’t constantly move. There are multiple muscles acting as a valve between different sections. Based on the factors above your body decides when to push stuff to the next section including the exit.
Still on my first Witcher 3 run on Switch.
Spoiler
Just missed the Triss romance option today because I didn’t take advantage of a drunk woman. Apparently just saying ‘I love you’ doesn’t cut it. I don’t even like Yennefer (yet?), but oh well, I stand by my choice and don’t want Geralt to end up alone either. Otherwise just doing clean-up in Novigrad before I catch a boat to Skell-something.