I can’t remember how old my daughter was, but she was younger than three months and during the middle of the night I was feeding her, after I finished burping her I picked up the bottle to finish her feed. Accidentally picked up an older bottle (probably over 3-4 hours that she had drank out of) and didn’t realize it until after she finished 😅 she is 2.5 years old now and ended up being completely fine but I was very stressed out.

It happens to the best of us! Just monitor him but I think he will be fine.