LO not interested in purees

Hi FTM here. I started giving my baby sweet potato puree once she hit the 6m mark but she didn't swallow, and gag a little. Next weekend I gave apple puree and she gagged. This weekend I gave potato puree and gagged again. Is it something worrying? 2 more weeks she will be 7m alr but like still not really eating pureed yet!! Thanks!