I'm sorry to post a topic which has been discussed before but I need to ask for some advice please!
My 2 female cats are 14 years old and have been pretty healthy to date. Recently both started to gag when given food and wouldn't/couldn't eat. We ended up taking them to the vet for tests & treatment over a period of 10 days. Mirtazapine tablets eventually encouraged them to eat alongside steroid injections and antibiotics.
I thought I was feeding them 'good quality' food all their lives but having researched cat nutrition I now see that they've been eating meat & meat derivatives, sugars, and grains etc.. I'm pretty gutted that I didn't research their nutrition sooner in their lives.
We live rurally and one cat in particular still likes to hunt (and eat her prey) but the other is now more overweight and not so active. They both have teeth issues.
It seems that grain free and a high protein wet diet is a better choice of diet so I've tried them on Nature's Menu. I'm also in the process of gradually introducing a high protein grain free kibble. I dont want to go down the raw food path as I don't know how their digestive systems will tolerate raw food at this stage in their lives.
One cat (the hunter) seems to be adapting to the meat only diet pretty well but the more sluggish one named Honey is very picky. She's used to me pampering to her need for different foods and opening a tin of something else if she doesn't fancy this or that at mealtime. Now I only have Nature's menu in the house having given away a huge box of wet and dried food to our local cat rescue centre.
I don't see their stools as they poo outside so I don't know if she's constipated or has loose stools. I don't think Honey's just picky but that she also has digestive sensitivities. But she has always been a 'greedy' cat and she did eat the Nature's Menu to begin with. Then she stopped and I'm concerned that it's too rich for her.
Now I'm totally confused as to what to feed her! She may be telling me she doesn't want the new food because it's too rich for her and has tummy upsets or she could just be faddy. She wants to eat kibbles but I'm anxious now about her being dehydrated (she was on a drip at the vet's because of this).
I'm also worried about trying out different meat only foods to see which one she likes. It means constantly changing the food again which may be unsettling for her digestive system. Also one always has to buy 12 of anything which means so much waste if they don't like it.
For 14 years I've been trying to get these 2 cats to eat what I give them! Now I start the day with my head in my hands all over again because Honey walks away from the food

My vet advised me to put them on a Royal Canin 'sensitive' diet but looking at the labels of ingredients I wouldn't give these to them and am surprised that they're recommended by vets!
What would you do please? Do I persist in only giving her Nature's Menu alongside some of the high protein grain free kibbles? Do I research another wet food brand and risk constant changes in her menu and the effect on her digestive system?
Also most meat only wet foods seem to be in jelly and I think she prefers gravy.
I do see that every cat is different and we all have to find what suits each one of them. It's so comforting to know that others have issues feeding their cats but how to proceed with mine?
Any suggestions would be very welcome please as I'm feeling increasingly anxious about it all...............
Thank you for reading this post and sorry it's lengthy!