Girls, hello! My daughter isn't eating like she used to ? We're on a f…

Girls, hello! My daughter isn't eating like she used to ? We're on a feeding schedule and sometimes we alternate between breastfeeding and bottle-feeding. She used to eat every 1.5-2 hours, but now the interval is sometimes 3.5 hours. Some people say that's okay, but I haven't found an exact answer online, they also say that it happens around 3-4 months. She was fed at 2:30 in the morning and then slept until 7:30 ? Now it's 10:30 and she doesn't want to eat. Is this normal? Has anyone experienced this at our age?