With the toliting at 10 wks he dosn't have the level of control to do it on purpose.
At 10wks our pups are put out to toliet everytime they wake up from a nap straight away, after everytime they drink or eat & about every 2hrs inbetween. Of a night I put them out for last wees at 10/11pm & I get back up at 5am to let them out but I also leave some newspaper out as at 10wks not all can get from 11pm to 5am without an accidents. Good news is it getters better & better & by 12 wks they have no trouble getting through the night at least.
With the nipping I would give a very low deep grrr sound but must be done with confidence & remove myself by simply walking away. If you do it every single time he nips he learns the game ends & he loses your attention. You have to remember whatever you do has to be within a spilt second of the nip as pups loses the conection within 3 seconds. A spray bottle on harsh jet spray straight at his face when he nips & removing yourself may also work.
Another way is to put a toy in his mouth each time he nips to redirect the action.
Make sure other family members are not playing rough & allowing the pup to mouth or nip as at this age a pup can not tell the difference.
And that the pup is getting enough mental stimulatsion. At that age they love plastic bottles with stones in it & rags tied together for cheap play toys. And you can start to teach little things like sit.
Dogs make everyday life enjoyable...........