No. Some people prefer to travel non-stop and stay on the road for a year or even more. Others like workation getaways, when you change the scenery for a couple of weeks while still staying in touch with the office. If you take off for a month, then come back to your hometown apartment for another couple of months, and then take off again — it still counts as a nomad lifestyle!
There’s no universal commission that decides who’s nomad enough and who’s not. You can travel within your own country or all across the world, fly away for three weeks or three years — nomadic lifestyle means freedom for you first of all.