Hello! My 8 month old had started eating more solids so naturally his poop is changing.

Before solids he would always poop at least once a day. He just recently went 4 days without a poop and I got a bit worried, even though I read it was normal.

When he finally went, the consistency was kind of like really thick peanut butter. Is that normal or should it be softer? I know pebbles are bad, just not sure what is normal.