Sleeping semi-upright due to urinary retention: equipment/setup tips?

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Hi everyone,

I'm looking for some advice. I have a medical condition that causes severe urinary retention, leaving me completely exhausted and struggling both to urinate and to sleep.

I've found that I can only rest if I'm elevated or sleeping sitting up. Right now, I'm stacking folding mattress toppers on top of my main mattress to prop myself up into a seated position.

Can I add a mattress topper or folded blankets to create a proper incline or a makeshift chair setup in bed? What setup or equipment do you use to sleep comfortably sitting up?

Thanks in advance for your help!