The honeymoon period usually takes many years before it's completely finished, it simply means you still produce enough insulin yourself to make a difference. The amount of insulin you produce can vary, like you already experienced in june.
My own honeymoon period was quite boring: simply slowly increasing insulin needs until they settled more or less after 4 or 5 years, but I don't think your experience is very unusual.
Enjoy it while it lasts, and keep a close eye on your numbers in case your basal needs to be reduced as well, and in case your pancreas suddenly decides it's taking the day off!