The signs you describe pre-sister's arrival could point to autism. My grandson, now aged 11, showed some worrying signs when he was coming up to 2 years of age. He 'lost' the few words he had been saying and would sit for quite some time spinning the wheels of a toy car, rather than push it along the floor. I used to take him to a toddler group but he would get very agitated and push on the doors to try to get out. His Mum took him to the GP who arranged a hearing test. This is usually the first procedure carried out as hearing loss could account for poor or no speech. Once this came back as normal he had a bit of a wait to be seen by other early years professionals, in both his home and nursery settings. Their reports were discussed and in my grandson's case a diagnosis of autism was made. It took a few more months for a Statement to be drawn up. This is a legal and binding document on the provisions that must be put in place for that particular autistic child to achieve their educational potential. Ask parents of children with special needs and most, if not all, will say that their major problem is fighting for their child's needs. Getting a Statement may be your son and DIL's first battle. These days money is tighter than ever so some local authorities may try to avoid issuing a Statement. Having been in that position, my advice would be to fight all the way. Statements open doors. If your grandson is autistic he may be able to attend a mainstream school but a Statement would likely say he would need a 1-1 teaching assistant for an agreed number of hours a week. Very important for him to have that extra input. If he needs a special school, as my grandson does, then it may involve the local authority paying for transport to and from school. Whichever nursey or school your son & DIL choose for him in the future, they will have to give him a place. Statemented children are high on the entry criteria of most schools. I hope your son & DIL get help with setting the ball in motion because at 28 months they have time to get all their ducks in a row should their son be autistic. Apart from the practical things that can be done for your grandson, the most important of all is total and unconditional love. I have a fridge magnet which says 'When you have met one autistic child, you have met one autistic child'. So true. They may be on the autistic spectrum but they can be very different one to another. They are just wired up differently to neuro-typicals. Whatever the future holds for your grandson I wish you and your family the courage to fight for his rights when you have to and the happiness he will surely bring in the coming years.