The most efficient way of doing the sessions is doing 2 sessions, in two consecutive days, per month.
If this is not possible or feasable, we can do 2 laser sessions, in two consecutive days, per week for a maximum of 6 sessions and taking a break of at least 8 weeks before doing more sessions. It takes around 16 days to complete those 6 sessions.
For example, if the first session is done on a Thursday and the second session is done on Friday, the 3rd and 4th sessions are held on Thursday and Friday of the following week respectively, and the 5th and 6th sessions on the following Thursday and Friday respectively. (see the Calendar Example)