Breastfeeding trouble

I’m having a really hard time today. My 9 week old has been exclusively on breastmilk her whole life and I’ve exclusively pumped for pretty much her whole life due to latch issues and what not. I went through weeks of cracked and bleeding nipples, painful breastfeeding at the beginning and then painful pumping for weeks. Now I’m dealing with a clogged duct I can not get out. I’ve pumped 3 times in the last 3 hours trying to help and nothing is working. I have a 3 year old, 1 1/2 year old and my 9 week old. Plus two dogs. My husband works long hours so it’s me home alone with all of them all day until about 7-8 at night. We just moved and I’m trying to get unpacked on top of that. I normally handle this kinda stuff well but I feel like I’m at my mental breaking point. Normal pumping is hard enough with all the kids but add in clogged duct issues and I know on the verge of tears from the stress of everything. I so badly want to switch for formula but I feel so guilty even though I’m always the first person to tell other moms fed is what and to do what’s best for them and their baby. I’ve just always gone 12 months at least giving at least some breastmilk with my other kids so the idea of stoping this soon makes me feel like I’m being selfish and not doing the best thing for my baby. Also the formula shortage sucks and the brand I want and fed my second kid is never in stock. Just need to vent and hear from some other moms to help me out here.