There is no limit to how many times a day a baby can be suctioned, as long as the baby has phlegm in the throat, in principle, suctioning can be done, but the actual clinical operation should be weighed against the pros and cons of the treatment.
Babies are too young to cough up phlegm as adults do, so they need to be sucked out with the help of suction. There is no special regulation on how many times a day a baby should be sucked out, but the clinical practice should weigh the pros and cons and not suck out phlegm for too long, because too long may lead to damage to the respiratory tract, resulting in lack of oxygen.
Some of the sputum may be sticky, so it is not easy to be suctioned out. Parents can treat the sputum with nebulization when suctioning, and then suction again when the sputum is diluted, which will be more effective.