My cat won't eat dry food anymore?

So a few weeks ago we had to put down one of our cats. turned our she had a bad mouth infection for a month or so and we didn’t know until it was too late. The vet said he wanted to check out our other cat. we brought him in and he had the very early stages of the same infection and had to have 2 teeth removed.

while he was recovering the vet gave us some wet food for him to eat. he was eating that for about 2 weeks. prior to that, they both had always eaten dry food.

now he really won’t eat the dry food at all, but will scarf down any wet food we give him. he’s starting to loose a bit of weight, but the vet said it’s not good for his teeth to only feed him wet food.’

can anyone help? thx