(1) I'm assuming these are for 3 sets each?
(2) What are your increments from w/o to w/o?
(3) You lost 3 kg over the past 16 workouts = ~ 5 weeks? Were you chubby to begin with?
(4) The answer to your question is generically "no, don't stop," unless there's something you're not telling us (drastic form issues, pain, etc.)