Ay, nakakaworry talaga yan, mama! Since baby is only 1 month 3 weeks pa lang at suddenly may hardening ng poops after the direct latch switch, I'd really suggest checking with your pedia soon, kasi sometimes ang direct latch combined with mix feeding can affect digestion nang konti, or baka baby needs time to adjust pa lang. A few of us mums noticed na when we suddenly changed feeding methods, it took a couple days before baby's system settled, but hard stools sa ganitong age ay better safe than sorry talaga. In the meantime, maybe try warm compress on baby's belly or gentle tummy massage, pero definitely get your doctor's opinion kasi mas alam nila what's best para sa little one mo!