Sabar ye, hiccups memang sangat biasa pada babies, especially dalam bulan-bulan pertama, semua babies kena through phase ni. A few of my mum friends also worried gila-gila dulu, tapi doctor kata it's totally normal and doesn't hurt them, even if nampak uncomfortable. Kalau hiccups tu sampai ganggu tidur dia, try baby dalam position yang relax atau offer milk/water sikit-sikit to help stop it, tapi honestly most babies outgrow this by 3-4 months. If you're really worried or nampak ada signs lain yang tak normal, best to check with your doctor just untuk peace of mind, then tidur lah kita dengan tenang hehe.