My baby is active rhe most at night time also. As soon as I get into bed! Or when I lay on my back on the sofa whilst being sat down.
Another tip that could help… drink a cold glass of water and then lie on your left side for a few minutes and hopefully baby will move … this is what my midwife told me to do if i was worried but dont relay on it and as others said, contact your doctor or midwife if you are concerned
When you're busy and moving around it's harder to feel and the motion actually puts the baby to sleep, this could be why you're not feeling your little one as much during the day. My doc also told me that babies are more active at night.
That being said, if you're concerned, ask your doc. I'm sure it's normal though.
Im 27 weeks and pretty much in the same boat, this is my second pregnancy, I wouldn't worry too much but if it's on your mind too much just give a call. Walking around and standing at work I don't feel the baby unless it's real strong pressure