So basically i have a pretty narrow palate and i have braces ( getting them soon off and then invisalign/retainer) so my teeth are straight but i have a problem and that is when i try to mew i put the tip of my tongue just behind my teeth and engage the whole tounge too but it touches only my pre- and molars, will my palate expand if I continue and is that correct and also if i put the tip of my tounge a bit back (behind the ridge at the pre-palate) it doesn't really touch my premolars and a tiny bit of my molars but still i can feel that my tounge is up there so I don't know which one is correct. I am scared of my teeth tipping or something going wrong and i want to improve my posture. Also i cant do the suction hold yet and im 16.