It is important to take a break from your instrument sometimes. I just came back from a couple of weeks of vacation myself! Not playing for a little while will help your body to get rid of tensions accumulated during the past few months and rest your head while you think of something else. When you come back to your instrument,
you're more enthusiastic about playing and ready to rock!
The downside of this is that you'll be out of shape when you pick up your horn again. If I don't do anything during my break, it normally takes me one day of practice for each day of break before I get my optimal shape back. For example, it would take me two weeks to get back in full shape after a two weeks rest. That's why I always plan to come back from vacation several days before we start working again to get my chops running again. If I can't do that, I'll just bring my horn with me and play during my trip.
There are things you can do to speed up the process. I did the pencil exercise every day for a week before coming back and it helped maintaining some strength in my muscles. I also buzzed my mouthpiece a bit for 15 minutes/day during my trip. Once I got back to my horn, I did the Caruso technique every second day to strengthen my embouchure. Doing all this cut my recovery time in half and I'm almost ready for work after 5-6 days.
You need to be patient when you come back from a break. The first practice session will most likely not be very pleasant. Especially if you add jet lag on top of that! Increase the duration of your practice sessions and level of difficulty of what you play gradually. At first, play some very easy pieces and just get through them. The next day, try to play a bit longer and work on your tone a bit. When you feel a bit stronger, start playing etudes. They are very good for endurance since they normally have no or very few bars of rest so your chops can get use to play non stop for a while again. Like I said, the Caruso technique or any other chops building method is always good. With all this, you should be able to get back in shape in time for your next gig with a strong embouchure, a well rested mind and a relaxed body!
I am associate principal horn of the Singapore Symphony Orchestra and the author of the progressive methods. I'm happy to share my experience as a horn player and teacher with you.