1. Find some simple and easy-to-cook recipes: Search online or cookbooks for some simple and easy-to-cook recipes, such as salads, sandwiches and pasta. These dishes are not only simple to make, but also rich in nutrition and are deeply loved by people.

2. Discuss with other parents: If you are not sure what to prepare, you can discuss with other parents and ask for their suggestions and opinions. Parents will give you good advice and provide you with support and help in cooking.

3. Find volunteers: If you can't finish the food preparation and cooking task alone, you can try to find volunteers to help. You can publish an activity notice in class or school, invite students to participate, and jointly complete food preparation and cooking.