Sabar ja mummy, sangat normal apa yang you alami! Banyak babies memang susah nak latch terutama first few days tu, some took sampai 2-3 minggu baru smooth, jadi you're not alone. Yang penting is skin-to-skin contact as much as possible dan try latching frequently even if tak jadi; your milk supply akan respond to that, dan dengan time baby akan tau apa kena buat. For the engorgement and the positioning pain you mentioned, my mum group shared that hand expression even sikit-sikit before latching actually helps soften the breast so baby boleh latch better, plus you won't feel as stretched and uncomfortable, try warm compress before, then express gently until relief, baru latch. And ya, sitting up is okay if that's more comfortable for your back; baby doesn't have to be lying down, some babies actually latch better when mummy is comfy and relaxed. If the pain or engorgement persists or if baby's not gaining weight, definitely worth checking with your doctor or a lactation consultant just to be sure everything is on track! You're doing great, honestly.