Being pregnant and with a toddler. Trying to wean toddler off breastmilk but this makes her fall sick easier than before. Now drinking fm more often. How to strengthen toddler's immunity?

Did your toddler start school recently? Usually when toddlers start going to school they catch alot more virus and tend to fall sick more often. For me, I feed my kids either sambucol elderberry or childlife first defence. They are both to increase immunity of the child. Both can be purchased on www.iherb.com. However sambucol is for above 2 years old (for US version), so if you do intend to buy sambucol, please get the UK version.