Just put in 15 minutes to 1 hour of extra work a day, in Language, Science, Math, take breaks in between if you can't concentrate long periods of time.
Idk sorry could not answer
1.) would be Sind and Bin
2.) The first one doesn't have a meaning? I'm not very sure on that one, but the second one on two is Bin
3.) im not sure on either
im still learning german so that is kinda hard