Hi Holly. It takes a while to get used to dentures if you’ve not had them before. You’ve been without a full set of teeth for quite a spell so just adapting to having anything to assist with chewing will be a big change! Plus the new teeth take up space in your mouth and your cheeks haven’t had competition of a while! LOL. They may find themselves getting nipped from time to time until you get used eating with them.

You have the right idea about starting out with soft foods. As you get more comfortable you can add different textures. You’ll learn what to avoid for now and what works better for you. The tissue and bone around those extraction sites will continue to modify. And actually some of your other palate tissue may change too from having the solid material compressing against it. Think about a watch/watchband and how your tissue conforms underneath. When you take the watch off, you have an indentation. Your mouth tissue can react the same way. The denture may start feeling looser as this happens.
If the surgical site is closed, there shouldn’t be any issue with trying an adhesive if you need it to make the denture feels tight again while the changes take place. Did you talk about adhesives with your dentist?