I am getting underarm hair removal re-treatment. Is it okay to have fewer sessions?

Hello~ haha

I have an inquiry regarding underarm laser hair removal.
I had underarm hair removal treatment about 10 years ago.

Back then, I received treatment consistently, so it barely came back.

However, it doesn't stop happening completely over time.
Right now, it remains only in thin patches here and there!

So I'm thinking about getting hair removal again.
Even in this case, do I have to proceed more than 10 times like the first time?
Or I was wondering if I could reduce the frequency to suit the current situation and manage it only partially.

Also, in cases where it occurs sporadically, how many times is it usually done?

Whether the process is the same for those who received it before
I'm curious^^