Hindi ka nag-alala nang walang dahilan, mama, yung consistent pattern niya ay actually normal, and the fact na naka-track mo siya shows you're paying attention, which is good! A few of us have noticed na may preferred "active hours" talaga ang babies, so yung 30mins to hourly movement ay okay na, pero kung bigla-bigla mag-change ang pattern niya or bumaba talaga ang kicks for a few hours, that's when you should reach out to your OB agad para ma-monitor lang, they might want to do a CTG or NST just to check, walang masamang mag-confirm with your doctor talaga, lalo na first-time mom ka pa.