we had the same experience nung nagtransition from ebf to mixedfeeding nung 2 months si baby.
we plan to go to pedia after 5 days kapag hindi nagpoop. meanwhile, we did tummy massage and bicycle leg exercise. hindi na kami pumuntang pedia dahil nagpoop sia at 5th day. then we informed our pedia, she said pwede up to 1 week. glycerin infant suppository can be used.
best to consult pedia for advice since 1 month pa lang si baby.