Can I get 3 continuous diode laser hair removal treatments full body than take a break for about 4 months?

For the best results you should try and stay on every 4-6 weeks for upper body and 8-10 weeks for lower body.  If you take a break it can take longer to get great results as you will be missing the next growth cycle.

We all have lives.  You will have interruptions for travel, school, work, etc.  Ideally you should come for treatment every 4 to 8 weeks.  If you can't you are just slowing your progress.  Ultimately the treatments will work for you. It will just take longer to get there.  It might even take an extra treatment.

Laser hair removal works great
for permanent hair reduction of the body.  The diode laser is a safe and
effective choice in treatment.  Ideally, you want the patient to have a
continuous , uninterrupted series of 6- 8 treatments.  Or, whatever the
number of treatments recommended by your laser hair removal provider.  To
"take a break" from the treatments you could actually delay the
amount of reduction achieved.  You may even find that you end up needing
more treatments then originally expected.  As always, check with your
treatment provider to guide you on the right direction.

Taking a 4 month break may delay your progress as the laser treatment should be done every 6-8 weeks to target the specific growth cycle. It is best not to interrupt the treatment for long periods for best results. However, a few months delay should not have a significant impact on your treatment. You may just require a few more treatments due to the break.