hank you for reaching out. We are the admins of the website Thay Thich Truc Thai Minh! Your question has been answered by Thay:
"There is lying meditation. However, it is very difficult to practice because when you lie, you will easily fall asleep. Therefore, not many people practice lying meditation. Only skillful and senior zen monks practice that. When we are new to meditation, we should do sitting and walking meditation, it will be suitable for us."
If you have any more questions, please let us know.
We wish you and your family peace and happiness!