traffic is unpredictable and subject to ebbs and flows. This has been discussed at length in this thread
although at times, and more recently the conversations have gotten a little off topic.
You can also do a search on this forum for this exact question, which tends to come up just about every time the traffic decreases as SNOs get worried or concerned about the change. But ultimately, as long as your node(s) are seeing any traffic and you keep an eye on your audit and suspension scores in the dashboard to make sure they’re not decreasing, then your node is doing just fine and there’s no need to worry.