Hello everyone) Girls, can you tell me when I can start putting my son…

Hello everyone) Girls, can you tell me when I can start putting my son in a high chair for feeding and a sitting block in the stroller? When is it considered that the child has sat straight? My son sat on his own last week with support from his hand, he sits more during the day than lying on his tummy but wobbles and holds onto either his side or in front of his feet or toys. I'm not yet putting him in a high chair but really want to ?