is it safe to feed only formula milk to the baby if the mother isn't able to brest feed ? will it affect the immunity

A. hello mum there is no doubt that there is nothing like mother's milk for the baby and there are many methods to increase the milk supply like having good healthy nutritional diet have lactation tablets or have shatrvati but still if child is not getting sufficient amount of milk supply then definitely mother can shift to form the milk it will not harm the health of the child