Internet Recovery mode stuck at 24:00 estimated time

I am using an iMac (21.5-inch, Late 2011) with High Sierra 10.13.6. I have installed Windows 7 SP1 via Boot Camp and a bootable disk. It was working fine. So the other day, I decided to create a new partition on Windows using Windows 7 SP1 and it did warn me that I can only boot an OS from this partition. It did create a new partition (usable). I then checked the Boot Camp help system and it said that there was only 1 startup disk I could use, which is labeled Windows. And that is how I know i have made a big mistake. The following day I proceeded to hold down the option key while starting the iMac and normally it would show 3 options: Windows, macOS 10.13.6 and Recovery 10.13.6. (I am not sure about the names.) But, now it only shows the Windows option. So, I then restart my mac into Internet Recovery mode and it just stuck at ETA 24:00. It wont even move after 1 hour, and it gives me an exclamation mark in a triangle over the globe. Can you guys help me fix this please. I have tried to reset the NVRAM and PRAM, but it is still the same. I think it is because of my internet slowness, but there has to be another way right?