soy formula/whole milk

Maria

ok... so baby was on soy formula for tummy issues. she turned one last week and the Dr said to try her on whole milk, we did. for a week now she's been so bad constipated. the little pellets that come out are SO HARD! so we bought soy milk and she Hates It!!! so she's back to drinking whole milk with Caro syrup and juice throughout the day hoping she will poop. we go back to the Dr on Friday. but do y'all know what else we should try? is lactose free milk just as good as soy?