Help us save sweet Mittens please

Mittens was rushed to the ER today after having what we believe is a stroke, we have lost him twice now in our arms before the vet rushed back from his lunch to save him. He is currently on oxygen and is stable and getting lots of blood work done. So far we have been able to pay $1200 out of our cafe fund but we are almost depleted. And we aren't sure how much more this will cost. But we know it will be more for sure. Please help us ASAP. We can't lose this sweet boy and most importantly Snowie his brother can't. They love each other so much. We are fighting to save him now please help us do everything we can. Thank you