Tell me what I can do, my child only sleeps during the day if I'm lyin…

Tell me what I can do, my child only sleeps during the day if I'm lying next to him. As soon as I get out of bed, he wakes up ?. I left a t-shirt and bra near him, but he still wakes up in a couple of minutes. I manage to get to the toilet and back in time, but it's not enough. ? I don't have time to cook or clean. If you have children who magically fall asleep on their own, or if your kids sleep peacefully alone, please don't write here, but if you do, tell me how you do it. Thank you!