I bought a load of UV-B flo tubes with a desert profile and rigged them up over my bed which would go upto the ceiling and then they would come down in order to bask under for hours. I could control how far away from me the lights were so I could move have them closer to me for a quick 30mins or have them further away for spending 2-3hrs underneath them.

I'd go to sleep under them, just dont have them too close to you though otherwise you will burn but never tan.

https://www.reptilecentre.com/collections/t5-uvb-fluorescent...

I'd also read this website entirely, its got loads of useful info. http://www.uvguide.co.uk/lightingsurveyintro.htm