Have you done baby sign or Makaton (or equivalent in your county) or something similar with your son to see if that helps him express himself. If he is pre-verbal then you both might find it beneficial. Are you working with someone around speech with your son? It sounds like maybe your son might be feeling displaced by the baby (our son of a similar age frequently wants to play at being a baby, and very much wants cuddles and cuddle-carries, and he is pretty independent and doesn't have to compete with a younger sibling for our time/attention) but I am in no way a child psychologist and if you have early intervention to support your son they might have suggestions for what is happening (and what might have triggered it happening now). Best of luck.
@Faith thank you so much for your reply. I have contacted a speech therapist and he has been accessed but we’re waiting to do his occupational therapy assessment. Also the school brought the idea of EHCPlan and we’re working towards it at the moment
It doesn't help you immediately but it might be worth discussing it with the occasional therapist when the time come. Hopefully you don't have too long a wait. It must be difficult for you juggling two young kids. Wishing you and your family all the best.
Thank you so much
I can almost say the same thing for myself. Looking for help in this regard as well xx