I personally wouldn’t take any significant risks. Maybe work on being as clean eating as possible, but not run a calorie deficient. Maybe adding some volume to burn some calories (zone 2). But I would, personally, focus on my strength at this point.
I don’t feel like 2-3kg is significant. I am 2-3 more than I like right now and don’t feel that bad about it (same size as you).
Look back at where you came from just a few months ago. You are already below your target weight you had in July. You should consider that a goal met, not a goal missed because NOW you want to be less.