Yes, only one point, so it will not be difficult for Bayer to reduce this gap, there are already 7 points between them and Bayern, which will be much more difficult to reduce and so far I think that Bayern will not allow this to happen, because the level of opponents in the Bundesliga allows them to feel comfortable. But Bayer at the beginning of the season lost a lot of points with teams like Werder, Holstein, Bochum, if you want to defend the champion's title, you need to beat such teams.
In my opinion, Leverkusen should bring in new faces in the second half of the season, new strength can at least increase their chances of continuing to approach Bayern Munich's points, because I see Leverkusen's current players look mediocre, especially in defense, so far Xabi has not been able to strengthen that sector. Only a few players can be relied on on the field.
Bayer Leverkusen performed very well last year. They did not start the year well but they are in a better position now. Of course, they may want to transfer new players during the mid-season. The important thing is not to send away their strong players from the squad during the mid-season transfer period. They can reach a much better level with the transfers they can make by keeping this squad. If Bayern Munich makes mistakes in the rest of the league, they still have a chance to win the championship.