Hai mama! Don't worry, ini normal je, timing gerak baby depends a lot on where your placenta is and baby's position, bukan because you had a c-section before. Some mums feel movements stronger by 5-6 bulan, some baru obvious around 6-7 bulan, especially if placenta is in front (anterior placenta tu naturally muffles the kicks sikit). Since your scan shows baby is healthy and moving, those small flutters and movements you're catching are the real deal, sometimes second pregnancy pun boleh feel different from the first one. Maybe document a few kicks a day just to track, and definitely mention to your doctor next checkup kalau you want peace of mind, but from what I've seen, as long as baby is active on the scan, you're good. Jangan stress about it, baby is doing fine!