Pet care guilt and ocd?

My cat doesn't drink water and only eats wet food I read up on it a lot and read it was fine because he eats wet food I also saw people say they didn't necessarily need it because they eat mostly wet food and I've had my cat for a year now I've never owned a cat so I took that as they didn't necessarily need a water bowl so I didn't have one but I would add water to his food sometimes and he did have a water fountain but it broke so I thought it was okay for his to be without it and I added water occasionally but then saw others talking about it realized that my cat should still have water throughout the day I feel super bad about it I bought a water bowl as soon as possible and am ordering a water fountain when I get money from my boyfriend for it on Friday. I feel like the worst cat parent ever and i don't know how to move on from this. I feel very sad that I didn't know better. We took him to the vet about 5 times this year or maybe more because I was super anxious about his health which comes from my ocd. I am constantly worrying about his health. every time my vet said his hydration was good except for sick days when he vomited or had diarrhea which in that case I tried to add more water to his food. Has anyone else had an experience like this or similar and how do you move forward without the guilt eating at you? I really want the best for my cat but I feel like I'm not doing well enough. I just feel like a horrible person and I don't know if I can recover or be better from this but I think it's just my OCD but I'm not sure when I've asked people without ocd for advice they tell me to just move on... But I just feel a big weight on me and an immense amount of guilt. I often wonder how people can just move on so easily I don't understand it..