Everyone progresses at different speeds regarding healing and being able to 'chew' solid foods, so be patient. Keep in mind that you don't have to have solid foods in order to gain or maintain your weight. I suggest you keep up with your supplements.
Start out with soft/pureed foods: applesauce, puddings, oatmeal, mashed potatoes, and baby food et cetra. Gradually move up to semi-soft foods that you can chew but will easily dissolve in your mouth if you find you are not yet ready or able to chew such as light toast, soft cookies, or a baked potato.
Healing and chewing is not a contest. I am just a few days past 4 weeks with a full upper and a lower partial (9 upper extractions and 2 lower) and I am able to chew and eat most anything so far. I've had ham 'n swiss sandwiches, pizza, chicken wings, hot dogs, lobster, and shrimp to name a few. I didn't have any major pain after my 3rd day but, I did have some minor discomfort, and I only went in for one adjustment to have a rough spot buffed out of my upper and the wire on my partial realigned.
Because my gums are shrinking, I occasionally find my dentures to be a little loose at times, but I have been able to overcome that by using Fixodent with Scope. Overall, I suppose I am doing better than a lot of people but, everyone will eventually adapt and become comfortable with their dentures.
This is not an 'overnight' journey. It takes time and tolerance. I still have about 5 months before going in for my final realignment and fitting. Until then, I am sure I will have a few hurdles to jump.
Don't get discouraged and don't try to rush things. A positive attitude brings positive results!
There are different views on this...
I leave mine in the majority of the time unless I am soaking them for a few hours.
The way MY dentist explained it to me was: 'The denture will give your gum a foundation that it can form to. During the first several weeks, your gums are going to swell, shrink, and change shape. If you leave them out too long, you might find they won't go back in very well because your gums changed in dimension. If you wait 6 months to get your dentures, your gums are healed and in the shape/form that they will remain. So, a later denture will be made to fit your already healed gums'.
At 5 weeks out, I can tell that my gums are taking the shape of my denture. It is healing with a rounded, curved, and smooth shape and the pockets are starting to fill in evenly.
I don't think leaving them out for a few hours would do any harm but, you would be better off posing this question to your dentist. You might need to go in for an adjustment to have some rough spots buffered off where they are rubbing.
In the mean time, rinse, rinse, and rinse with very warm salt water 4-5 (minimum) times a day to promote healing. You also might want to get Orajel mouth wash and rinse with that (I held it in my mouth for about 2 minutes so it had time to work) to help with the pain?
I hope this helped.