2 month old physical therapy or chiropractor

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Is there such thing as physical therapy for a 2 month old with a stiff neck? I cant get her to turn her head one way unless i do it and when i do she turns it right back over. The side she favors is flat so im wondering if physical therapy or a chiropractor is my best/safest bet...

UPDATE: thanks everyone i have a video visit with the pediatrician tomorrow to talk about my options.