The situation you mentioned is very good for a puppy of two or three months.

If the body temperature is basically normal, it will be fine for a month at most.

Continuous treatment, late symptomatic treatment, diarrhea, gastrointestinal runny nose, asymptomatic treatment of the lungs, and don't ignore the temperature measurement twice a day.

All kinds of needles for improving immunity are gradually labeled with specific drug names, so I won't report them. You can search my previous answers.

Keep up with your diet, improve your physical strength, and finally form your own antibodies to defeat the virus.

Please don't smoke eye drops. Keep using them. Keep using them.