No lie. Let’s get this right.
Don’t lay low; lie low. Say: “Today, I’m just going to lie low.”
That way, tomorrow you can say, “Yesterday, I lay low.”
Today, you lay your cup on the bedside table and lie down for your nap.
Tomorrow, you say, “Yesterday, I laid my cup on the table and lay down for a nap.”
Go here; learn the rules; take the quiz.