Supply dropped after mastitis

I'm literally crying right now, I don't know what to do 😭

I had mastitis 4 days ago and have been on antibiotics since then. I noticed my supply has just massively dropped and my 9 week old daughter clearly isn't getting enough milk. My letdown is usually very fast, now it's slow and barely there. I always use a Hakaa on the opposite breast and get around 2 to 3 ounces usually. Now I'm barely able to get half an ounce. Idk what to do. I've tried pumping and I've been able to produce like 1 ounce. Where I usually get upto 4. My daughter has been hungry and constantly u latches from my breast because of the slow letdown. I don't want to supply with formula as I know that will just worsen my supply. But I don't want her hungry either.

Has this happened to anyone before?

Please help me! I was so determined to exclusively breastfeed this one for at least 6 months as I totally let down my first daughter and now im trying to do better with this one.