Should I restart my pokemon white game?

The reason i am asking this is because i feel like i chose the wrong starter which is snivy and i chose the wrong fossil which was the plume fossil when i wanted the cover fossil so can anybody trade me an oshawott egg so i can get an oshawott and is there still a way to get tirtouga and by the way i have beaten the elite four but i havent faced the champion yet plz help me and if you have an oshawott egg tell me your friend code and tell me which pokemon you want for it