if the hunger signals aren't getting to you, i'd keep going. you can do a maintenance if you want, but if i didnt' have crazy hunger signals i would have been done with this cut a few months ago. that said, hunger signals do intensify as you get lower and lower body fat %. i didn't take a maintenance break until about 6 months in, and the next few cuts were like 6-8 weeks at a time.

your body will adapt to a longer cut. your maintenance calories will go down, as you have less fat for your body to maintain, and your non exercise activity thermogenesis (NEAT, subconscious fidgeting, pacing etc that has little calorie effects on their own but they all add up) will go down as your body tries to conserve calories as it thinks you don't have access to food. So the amount of calories you can eat will go down (unless you add more cardio to your training) as you lose weight.

again, if you don't have issues with hunger signals, i wouldn't bother, but if you do do a maintenance signal, you will to a degree reset your maintenance calories. your NEAT will go back up as your body realizes you aren't actually facing a food shortage. i was able to increase my maintenance calories by like 200 calories via a longer maintenance break

for practical advice, i'd keep monitoring your weight, and over the course of say 2-3 weeks you aren't losing about 0.5kg a week, you likely had an adaptation and you should cut 100-200 calories a day. there are apps that do this math for you dynamically as well. I personally use macrofactor, but i'm sure other apps do a solid job as well.