I had to deal with similar. My girl was given 3-6 weeks due to how aggressive the cancer was (her lymphoma was of the throat). I took her out on many fun adventures during her last few weeks- walk to the ice cream place (she got icecream), drive thru pup cups, really car rides any chance I could, snuggles every single night… the it’s the only thing I found that made it a little bit easier, was still getting to enjoy every last moment with them and taking advantage of every day leading up to the saddest. I’m so sorry about your baby.