I've had my temporary set of dentures for a little over 2 months. My tops fit and feel perfect but my bottom dentures will not stay in place. Every time I go to eat something they pop out. I've had them adjusted 3 times and 2 sets of the soft liner. It seems like the soft liner fills in where my gums should be sitting and I don't get to suction work it. what should I do? I've still got 4 months before I get my permanent set but would like to be fully adjusted to dentures when I get them.