Being a layman at home, unlike in a temple, requires no etiquette. When offering, you only need to recite or meditate: "Provide for Buddhists and Monks to live in the Three Treasures and provide for all beings." Then read the Buddha's name.

And fasting is actually lunch, and this lunch must not exceed noon, so it is called fasting. To be precise, vegetarian dishes should be offered to lay people at home, and only those offered at noon can be called fasting. And do not give priority to fasting at home. Just provide clean water and fruit.