A common way Terrans play is to put mines in front, marines and tanks in siege mode behind. They usually put it outside your natural.
What’s the best way to handle this situation? How do you attack?
Fungals keep bio from retreating to safety, ravagers are also prime for clearing tanks and mines
For me it sounds like mass roacher if done correctly could counter it sort of, if he really moves into your natural then he would be traped wouldnt he, catch him in the right moment and perhaps dont just watch as he walks into your face and sieges everything in a perfect position. I watched pro players doing it but i dont know your league of course, but from the perspective of a diamond player that sounds like the correct move.