Hi, Nonny. Wicca is an entirely different religion from Heathenry, with a different ritual format and, at least for reconstructionists, a different ritual calendar. It’s also totally acceptable to hold a blót on a day that isn’t an established holiday.
You can find posts about how modern Heathens structure their rites here, here, here, and here.
You can read more about Heathen holidays here.
– Mod E
Also, I’m assuming it was a typo, but just in case: Sabbath is a Christian/Jewish thing (I can’t remember which though, or if both religions partake in it). The pagan term you’re looking for is “sabbat.”