When Rajab commences we should increase the time we spend in the masjid. We should start for example by sitting for an extra five minutes after salāh. We should increase this time after ten days, and continue increasing it until we enter the blessed month of Ramadhān, when we should increase it even further.
If work commitments do not allow this during weekdays, then it should be done on weekends. If we think about how much time we normally spend in the blessed environment of the masjid, we would have to admit that it is the bare minimum or just a little bit more.