My 2 year old daughter is literally obsessed with her toy baby, its only just started recently, she will not do anything without it, she goes everywhere with it and it cant have clothes on it needs to be fully naked, she cradles it, burps it, tucks it in bed, gives it a bath they go in together, feeds it juice and food as if it was a real baby i even have to give it a kiss and cuddle before bed and tuck the two of them in, ive found myself cradling it aswell, i feel nuts haha is this normal behaviour for her age?