Fetal movement at 23 weeks

Hi. Can I check if fetal movements shld be regular or have a regular pattern at 23 weeks? Baby have been active for days but tonned down down since abit ytd. It has happened before. I went in for check and everything was okay. However, im asked to monitor reduce fetal movement yet also told fetal movement can be irregular at this period. It's really confusing and stressing me out! Having alot of fear and anxiety :(