Our almost 3yo has been "slow" from the beginning but the HV and at nursery they don't seem concerned.
He can talk, but you have to prod him, otherwise he'll just point in at things and make noises.
He still sleeps with us for at least 3-4 hours. TBH this bit doesn't really concern me as I was similar.
He won't have a bath, it's literally like we're killing him.
He has absolutely zero interest in potty training. He can be wet and/or soiled and doesn't get bothered in the slightest. We can sit him on the toilet but won't do anything. AFAIK at least he tries at nursery.
Is any of this concerning? He's the baby of 4 siblings (who are 10, 12, and 15) so we think he's just being the "baby".