[vlasev]

Have you got checked for sleep apnea?

Have you tried sleeping elsewhere? On a couch? What about sleeping in a semi-seated position? Would that work?

How's your weight? Does it go up or down?

Finally, if you are in bed for 30 minutes and you haven't fallen asleep, it's probably way better to either get up and do some stuff or to just accept that you won't be sleeping and just stay there and go through your imagination.