Older whippets

Hello,

I’ve had my 2 girls (one is going to be 14 in May and one was 13 in Jan)

I’ve noticed my 14 year old one has been more and more slow in walks and she is not eating as much as she used to.

She also has started to wake me up at 3AM, 4AM & 5AM to pee or drink water.

I don’t want to subject her to vets and blood test, I just want her to be comfortable and for her to eat as much as possible.

Any advice? I’ve changed foods but she seems to only enjoy wet food now.

Any other advice to get my dogs more healthier and happier.