It is possible that your baby's frequent regurgitation is due to lactose intolerance, but it is also common for infants to experience frequent regurgitation as they learn to digest on their own. As long as your baby is wetting and soiling their diaper, gaining weight, and appears to be in good health, there is usually no need to worry. There are measures you can take to reduce the risk and frequency of regurgitation, such as using a smaller nipple size, taking breaks during feedings to help release gas, feeding smaller amounts more frequently, and avoiding changing your baby's position or laying them down for at least 20 minutes after feeding. It is always best to consult with a healthcare professional for personalized advice and guidance.