We will also be starting our first cycle of IVF in January/February. I am still fairly new to the boards, but I can relate to how you are feeling. It's a heartbreaking journey!
Something that has helped me is joining a local infertility support group. I was reluctant to join - that sort of situation is usually not my thing, but my RE suggested it at a time when I was really down and I'm glad she did! It meets once a month and it's nice to have a place to go where I can let my guard down and be around others who understand.
Good luck! If you ever need to vent, feel free to message me.
PS- Your furbabies are adorable