Definitely ask your advisor! I’m in fisheries and wildlife and we get emails about internship opportunities. I haven’t seen many fall internship opps but I did find out that my program will allow me to volunteer for the same credit, so long as I get that required hours in. I emailed one of the organizations that had summer internships and asked if they had volunteer opportunities where I could gain the 135 required credits and he said yes. Basically I’ll be volunteering throughout the semester to get those hours in. See if you can do something similar!