As above bit of an odd one and not sure how to resolve!
Since one month old baby sibling arrived, my toddler has been through not eating (resolved), not making it to the toilet on time after being potty trained for a long time (resolved), but does not seem to be able to get over one grandparent holding or picking up her new sibling.
I think this might stem from the fact this grandparent provided one to one childcare once a week, and perhaps toddler doesn’t want to share said grandparent? She doesn’t seem to mind others touching the baby but goes absolutely mad when her loving grandparent does! Cries until I take the baby.
Any thoughts on how to resolve? Doesn’t seem to be improving by itself like the other responses! Have tried ignoring, explaining etc