Hi - I had rotator cuff and biceps tenodesis surgery on both shoulders last year, 6 months apart. I was in a sling for about 7 weeks on each one. My surgeon told me to sleep wherever I could be comfortable and I personally found it way more comfortable to sleep in my recliner for the entire time I was in the sling. I could support my arm on a pillow and could even sleep on my side in my recliner. It was where I could get the most comfortable and the best sleep possible. I think you will find what works for you and every one of us are different- some can learn how to support your arm in bed and others in a recliner. Just try each and see where you can get most comfortable and the best sleep. Advice I was given by a friend was that if I did find my recliner more comfortable, spread a flat bed sheet on your recliner at night. That made it feel more like sleeping in my bed and was really a smart idea! Good luck!