Any ideas???

Li

My 15 month old had surgery in January to have a cyst removed on his temple because it was eating into his skull. Surgery went great and he is doing great. He then got really sick with the cold last month and took about 4-5 weeks to more or less fully recover. The thing is that ever since his surgery and being sick, he is turning into a picky eater. Prior to surgery and sickness he would eat ANYTHING. Now he mostly wants milk, fruits, french fries, noodles, and baby snacks such as puffs, lol crunchies and fruit puree pouches. I'm not sure what to do because I want him to go back to eating everything. I feel like milk and fruits are not enough protein or calories for him. Any ideas why he is becoming such a picky eater? And any ideas as to what I can do to get him to eat everything again? Is this a normal phase? Or did the surgery/getting sick cause him to be this way? Thanks in advance for any ideas or input.