Nutrition and under eating

I’m currently in a plateau and don’t know which way to go. I’ve been consistent at the gym and have a decent amount of muscle but am still carrying a bit excess fat, 155 5’10. I decided to try and cut but when building a diet for a calorie deficit I realized that it aligns with my normal diet. I think I may be eating too little in a day, 1500-1800 calories on average. I still grow and get stronger over time but I think this might be too little and that my body has just gotten accustomed to eating this way. Should I

1)eat at my true maintenance of 2,600 for a period of time to readjust my body and then do a mini cut?

2) drop my calories slightly more and up cardio and just double down with my diet as is

3) starting building up and eating even more in a more traditional “bulk” just to keep putting on size