The storage was meant as a BACKUP to the regular inflows from Russian pipelines - not as a replacement.
So, they have 93 percent of 20 percent of their needs.
The EU-27 gas storage capacity amounts to 1147 TWh across 18 Member States[1] – approximately 100 bcm, or one-fourth of the total EU yearly gas demand.
https://fsr.eui.eu/the-role-of-gas-storage/
It is about ten weeks of peak Winter use Europe-wide (if all other supply was halted), but not evenly distributed across Countries. Germany, Switzerland and the Netherlands have relatively more, Bulgaria relatively less.
Out of the ongoing supplies, Russia now accounts for less than 20%.
Several new LNG terminals, and a new pipeline from Norway, are on track to start up before the end of this year. The first new terminal at Willhelmshaven alone will be able to supply 8% of German’s annual use. It is one of eight new LNG terminals funded for just Germany, three of which are scheduled to begin operating before the end of this year.
Europe-wide, the funding is already sunk for a strong surplus of LNG import capacity over the next two years, with a front loaded push to meet this Winter’s use.