My girl is 11 with is getting in for her breed, she has become quite lazy over the last 6 months, the winter doesn’t help as she hates the cold and hates rain, she’s put on a bit of weight which she does every winter but she’s now struggling to jump up on the sofa and yesterday struggled to clear the back door step. Vet told me on our last visit that she’s in good shape but has a bit of arthritis (since then she has got worse). I know I need to try and get her moving more and maybe cut her food down a little despite her eating less than the recomended amount already. Should I take her to the vet or are there any supplements I can give her to maybe help her arthritis a little?