My cat who is now 18m, when she was around the 9 months mark went thru this "stage", I went with it for a day or 2 leaving food for her to ignore and me to scrape into bin. She was still nibbling the dry but leaving the wet.
After 2 days one morning there was nothing in her bowls no wet, no dry just the water bowl was changed, i left it till about 90 mins after her normal feeding time of 7am so 8.30am and set my alarm when it went off i put down literally a couple of tablespoons of dry food and half a pouch which was snaffled immediately when she was done i gave her a ear rub and a single treat and had to endure the daggers coming from her eyes over the hours that followed,
her next normal snack time was also delayed by 90 mins and i repeated it again to the sound of the alarm but this time she got same amount of dry food, second half of pouch
3rd meal of day - 4 tablespoons of dry food (she looked forlorn) when realised that was it and nothing being left to snack on
4th meal and bedtime - full pouch (snaffled immediately after alarm went off she was waiting for it to be put onto the ground), dry food down for during the night with water
I carried this "regime" with alarms for about 3 weeks to give her time to settle with it so she knew what was happening and when and no problems ever eating anything since - when my phone alarm goes off for some reason for myself, she goes straight to her food bowls, or if i need her to eat something (that ive added medication to lol), thats the bit goes on the dish and the alarm goes off
I give her a rotation dry food wise of iams, purina, go cat, tiger, tesco own brand,
Wet food - whiskas, any kind of cat soup will bite hand off for, gourmet , sheba, felix, tesco own brand, asda own brand,