A.C.
Sometimes slight changes in their life can cause "slidebacks" in potty training progress. Even something like warm weather can be that problem. My daughter who is 4 even sometimes has accidents and she's been totally trained since 28 months old. Seeing that he's only been trained fomr 3 months I dont think that 2 weeks of a mishap is a issue personally I'd just keep reminding him to use the potty as if you were training him all over again. I know its frusterating but kids are hard work. Training can take years trust me I have to remind my daughter every time we leave the house to go before we leave