Just thought it might be interesting for future applicants.
So my application was received on September 15th and we got sponsorship approval on November 28th, I ordered GCMS Notes, just out of curiosity to see what they are doing with my file. I received the notes today per email and they are from February 9th, about a week before I got my COPR. Apparently they had everything on Dec 28th and were just waiting for the medical. It says they thought our relationship was bona fide and all the checks were done too. They had to contact the medical office in London to get my medicals and received them after February 9th and then issued the COPR right away. I did the medicals only 2 days before I sent the application, maybe that could be a hold up doing the medicals too late. The other thing is that they didn't doubt our relationship at all and we didn't sent a whole lot of proof, some emails and some pics. My husband also had almost zero income for the requested period and we both had no job at the time of sending the application and that was not an issue either. We did sent a letter from his parents that we could live with them until we got things figured out. In total our application was around 500 gramms and apparently that was enough.
If somebody has any questions feel free to send me a message, I got quite a bit of help from this forum and I would love to help others.