I'm on my own every weekend as Ds goes to his dad's. I sleep in late on a Saturday, then watch sport on television, if there's nothing to watch, I either read or listen to music & crochet. I sometimes have a long soak in the bath, put a treatment on my hair & a face mask, by the time I've done that, got dry ,& dried my hair it's passed on a couple of hours.
I used to struggle, feeling very lonely, but now look forward to my weekends, I also treat myself either to having a takeaway delivered or cook myself something lovely that DS doesn't eat. Before I know it Sunday is here, I get up late again, have a lazy morning before starting to get organised for DS coming home, making sure all his uniform is ready for morning, planning meals for the next week before I pick him up, we spend a quiet evening together & have an early night.
Try to stop thinking of it as a stretch of 2 days, make sure you have almost a toolbox of things to do, new books & music are good, adult colouring is very relaxing, craft things like knitting, crochet or sewing, movies, boxed sets, have supplies of beauty products to try, a nice bottle of wine for Saturday evening, book yourself a hair appointment or get your nails done, sometimes just the change of scene helps, even if you are sat in the hairdressers with a magazine.