That sounds encouraging.
Is your ER clinic open 24 hours a day? You're lucky. Around here, they are only open nights weekends so if you have an animal who needs 24 hour care during the week, they have to be at their regular vet during the day, be moved to the ER at night, and back to the vet in the morning. Been there, done that.
Thanks for updating us. I have little Toby on my mind and in my prayers.