Really good luck for Lucy I hope you are over the worst.
I experienced something similar it's such hard work. I felt drained all the time, I've got 3 children so I couldn't understand why I felt sooo tired!
Unfortunately the kitten I tried to save also had chest compression which although he'd been seen a couple of times by 2 different vets they didn't spot it. Once I was feeding him, it became really obvious, he also had poo problems. I had to have him pts at 4 weeks old, it still makes me sad that there was no happy ending for him.
