You and Tanjiro are great friends but since you are a Hashira that means to him that he was do anything for you without a complaint. He didn't even have a break and always asked you if you need anything

After he finished cleaning your house, your clothes and your Nichirin sword, he immediately went to find you again. He put your clothes where you normally keep them and handed you your sword. When you took it from his hands, he looked up at you with a smile "What's next? I wanna help!"