It is very unlikely that Leverkusen will lose points when facing Bochum, especially since the opponent they are facing is a team that is at the bottom of the table and this match is played at home as you said. In addition, Leverkusen has not given up on continuing to defend the Bundesliga title even though it is difficult, but Xabi Alonso is not the type to give up easily before the season ends.
Because even though they are currently 6 points behind Bayern Munich but with 8 matches left anything can happen, in football there are always unexpected surprises. Moreover, Bayern Munich has a concentration on the UCL league while Leverkusen does not. Of course this indirectly has a big impact on the Munich squad, especially if Kompany does not maintain the fitness of the players by rotating the players, the potential for losing points is very large.
What Leverkusen need do is stay focused and continue in winning their own games, and not wait on Bayern Munich to lose points, Being on top of the league table, even carries a pressure especially when the league is nearing end, because this reason, Bayern could drop off some points. But just that Bayer Leverkusen missed it when they were expected to bounce back and now it's no longer an easy stuff seeing only eight games remaining and are 6 points away from Bayern Munich, even though Bayern loses two games there's no guarantee that Leverkusen won't draw 1or lose 1.