Ay, normal lang yan mommy, formula babies usually poop every 1-2 days, sometimes even every 3 days pa, kaya hindi ka mag-alala kung twice a day lang siya or pang-ibang schedule basta soft lang ang consistency, hindi hard at nagpapsakit sa baby. Good call mo sa lactose-free kasi ang tuyot na poop means ang milk isn't sitting well sa tummy niya, pero kung umiiwas pa rin siya mag-poop or makikita mo siyang uncomfortable, better to check with your pedia para ma-rule out kung may constipation o milk sensitivity pa din.