Boomers Mass Cell Cancer

Hello everyone hope your having a blessed day. My babies name is Boomer and he's 7 years old and has been diagnosed with Mass Cell Cancer and has had 3 surgeries so far removing tumors. In the past couple months he has had 3 more bumps pop up. They sent me an estimate to remove 1 bump but now that two more for a total of three bumps I'm sure that it will be close to six hundred. I recently just had spine surgery the end of November for realignment of my spine. We are just now getting everything caught up. My spouse and I are both on SSI and could really use the help. Anything would help at this time. His surgery is scheduled for the 21st at 8am. I uploaded all the vet info to show what I stated above. Please if anyone is able to help it would mean the world to me. Boomer is my support pet and I need to get these removed asap. Mass Cell cancer makes his histamine levels spike and he could die from anaphylactic shock. Thank you so much for reading this and I hope you have a good rest of your week.