normal, every baby is different in their progress, if he cannot lift his head by 5 mths , then you can ask PD.
don't stress yourself, don't stress the baby or both of you won't enjoy TT
normal I guess cause different baby different progress. my lo was progressing a little slower than the normal advice timing but suddenly the next moment everything just when smoothly.
Don’t worry too much. Try to give him more tummy time so your baby will be able to practice lifting his head.
Normal. My baby is 3 months already and still barely able to lift his head up for long…
About 2-3 months, baby will be able to lift head when on tummy.