I have five gliders. Three of them need their nails clipped every two weeks. The other two could go a month or more. I just figured gliders nails grow at different rates the same as humans.
I could actually clip my one boy every week probably. His nails just grow super fast and his always getting snagged if I don't keep up with clipping them. Some of his nails have grown very thick and have gotten close to cutting into his nail pads, so I had to be very careful and persistent once and trim them in to make them thinner. His nails are a constant issue, but I just do my best to keep up. On a side note he is my most skittish glider, but I can manhandle him without getting bitten to do his nails and I swear he seems happy to have them done now.
Oh and not sure why the nails are suddenly a problem for you, but same for mine. They were all fine for like two years. Then Thor's nails started to be a problem. Then Clare's. Now I just clip the trio twice a month and the pair once a month. It is what it is.
(Sorry about your girl and her leg-hope she's ok now)