I wanted to update everyone about what we found out from the new v-e-t but I'll let Mommy explain since she let me sleep in (again)...
Mommy here: The vet said that Isabella does have a lower respiratory infection like bronchitis or asthma. Her bloodwork came back good and no signs of diabetes but the vet wants her off prednisolone because it's causing her to gain weight and she said in time Isabella WILL have diabetes as a result of the meds. She recommended an inhaler (AeroKat) so we ordered one and hope Isabella will let us give it to her. She is extremely tolerate except she doesn't care for having her face touched, especially around her mouth. The vet seems to think that when Bella figures out it's helping her breathe she won't mind it. Time will tell but we wish we had done more to get her off the meds before now but we weren't told any different at the old vet. An inhaler was mentioned but kind of as a last resort thing whereas it should've been the other way around - the meds are last resort!
Isabella thanks everybody for the purrs and well wishes! She's making sure she's taking it easy and getting plenty of rest!
Do you have any tips on using inhalers on cats or any experience with asthma?