So at 5 weeks out, you should be in your Specialty / Peak phase of training, which should be pretty demanding. Looking to lose significant weight during this phase will require reducing calories need to refuel, recover and prepare for the next session(s).
Focusing on weight loss now is not optimal. You may lose a kilo or so depending on the volume you put in over the next few weeks, but your focus should be on the event prep, not weight loss.