Severe Forearm RSI. What is a healthy sleeping position to prevent further strain/ help healing process?

Unfortunately I like to sleep on my stomach or side but I will try ANYTHING to help me with my forearm RSI. Any suggestions? Should my arms stay straight not bent? Sleep on my back? Try not to bend wrists? I have realized that I can predict my pain levels at the beginning of each day solely off how well I slept. So if I can create a better/ more comfortable sleeping pattern I believe it will help me. Thank you all!