This appears to be a diaper absorbency issue, where the diaper is not absorbing as much as it should. This can be rectified with a slight change in the wash routine of the diapers.
So this is how you should wash your diapers:
1) Do a pre-wash of the diapers in warm/cold water to get rid of the pee.
2) Use the recommended amount of detergent as prescribed by Fluff Love University on the longest or the heaviest cycle on your machine. Use warm water.
3) Line dry or dry them on low heat on the dryer.
Fluff Love University has an index of detergent brands and the amounts recommended for cloth diaper washing on the link below. It is a great resource to see if your detergent is good to use with cloth diapers and the amount advised by their research team:
Just type the detergent you are looking for in the search bar and it will tell you if its good or not.
Tide Original comes highly recommended- FYI.
If you wash your diapers with this washing method a couple of times, it will restore your diapers to its original state and you will once again see them working well for you.
Please let us know how it all works out! We can be contacted directly at firstname.lastname@example.org