With the current trend, it is quite unlikely that the points would drop below 440 in the near future. Would suggest you to re-take the IELTS tests and max out your score (in case you haven't) or continue working at your current work place and wait until you have additional work experience (from 1 to 2 years provided you have time left in your work permit). If not, try to get a job offer supported by LMIA to gain additional points.