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DS1 is special needs so he is late on milestones.
Wht are the trhee month milestones? DS2 can hold his head and neck up really well, roll from belly to back (mostly when angry), reaches for objects, smiles, "talks",puts objects in hjis mouth
I like this site for milestones
https://www.babycenter.com/milestone-charts-birth-to-age-3
Re: 3 month milestones?
I like this site for milestones
https://www.babycenter.com/milestone-charts-birth-to-age-3