My son is 4months and suddenly in a phase of not wanting anyone but me to hold him. Like even his grandmother who lives with us. Im not sure whats going on with him but its a bit stressful since he crys extremely hard with them. He was doing fine with others but it suddenly started to change and i wanted to get a part time job next month.

Any tips on what could help i appreciate.

I should also note im a first time single mom so i am basically his sole caretaker. His aunt watches him on occasion.