Im glad he’s doing okay.
It sounds like he was able to dislodge whatever it was himself, which is ideal. But as mentioned, there are still risks after choking episode. A check up would be worth while to check his lungs and windpipe. Also his teeth in case they are partly responsible..
I wanted to link this info for “Rabbit Heimlich Maneuver” http://www.vgr1.com/choking/ which is good for rabbit owners to read up on. It’s not without risk and this page covers this along with correct and incorrect way to hold the rabbit for maneuver. It also has links to HRS videos.
The Georgia House Rabbit Society also suggests in their Bunny 201 series “Can also stroke the throat upward toward the mouth (Clear the nasal
passage and mouth by wiping away mucous)”
I do not know if this is while holding rabbit with head downward as part of heimlich maneuver or if suggestion to do this first before moving onto heimlich if it’s unsuccessful.
One of my rabbits has gagging/coughing episodes sometimes after he drinks water. Thankfully, it resolves itself so I don’t need to intervene. When you are seeing bubbles at mouth and or nose, excessive saliva and even liquified food out nose, pawing at the face, pointing head upward, that’s typical of a choking episode, as mentioned.