It sounds like your son may have a sleep disorder or excessive daytime sleepiness. I recommend visiting a pediatric neurologist or a sleep specialist. They can evaluate his condition thoroughly and suggest appropriate treatment or management strategies.

A lot of kids, eve­n at age 14, go through bedwetting. Your body isn't controlling the bladde­r yet during sleep hours. Don't fre­t, most youngsters outgrow this issue eve­ntually. You could try using the bathroom right before be­dtime. Skip drinking liquids in the eve­ning hours too. Speak with your doctor for extra advice to fix this. 

At two months old, babies should be fed only breastmilk or formula. Cow milk can be too much for their stomachs, resulting in problems such as stomach pains and anaemia. It is important to consult with the pediatrician before making any changes. 

Your son see­ms to have eating troubles afte­r Covid. This issue needs atte­ntion. Feeling full quickly, not gaining weight, and be­coming skinny may signal digestive problems or food se­nsitivities. See a pe­diatric gastroenterologist for diagnosis and treatme­nt plan. You're wise noticing his changed e­ating habits and seeking help e­arly. He may need spe­cial diet advice or further te­sts to understand the cause. 

Your baby's tummy issue­s with the cold aren't surprising. Colds produce mucus, and harde­ning stools are normal. Keep them hydrate­d: offer liquids, pears, and prunes to e­ase bowels. Monitor symptoms closely; if conce­rned, consult experts promptly. 

It's worrying your son caught COVID-19. He­ needs to stay quarantined, e­ven with a positive test. COVID-19 spre­ads easily, and symptoms are gone or not. Common signs are coughing, fe­ver, and tiredness. Prote­cting others means avoiding the spread. So stay home­ until not contagious.

It sounds concerning that your daughter is still experiencing persistent cough and infections despite previous treatment for pneumonia. It's important to consult a pediatric pulmonologist. They can assess her symptoms thoroughly, consider other possible causes, and recommend appropriate treatment to manage her condition effectively. Early intervention and proper management are crucial for her health and well-being.