Maybe you can try to feed vitamins C. If not, you may try dōTerra essential oils too. I apply the oils on my baby's sole of feet daily, he seldom fall sick now. Let me know if you keen to know more.
Please make sure your lo has enough rest and sleep. Drink plenty of water and try vitamin C. The best is check with your pediatrician what vitamins is good for a one year old
We were prescribed this recently! https://www.raffleshealth.com/immuped-syrup-60mls.html
I give vitamin c, organic type, meshed and give my daughters..
Consult a doctor before you give anything
Yes, can start your son off with vitamin C
Ensure your LO has sufficient rest.
Consult doctor
Eve