Tldr: Should I switch from full body workout? If so to what?

Hi guys, so I have been lifting on and off for years and months now(basically started lifting then abandoned it, and the cycle repeated itself) Ofc I have some gains, little over average.To the point: I have been lifting now for 2 months straight, not gonna stop this time, Im sure. I have been doing all body workouts till I got used to training again. Now I dont feel like a train hit me, and my muscles doesnt sore for a week after a single workout. So whats the next step? What type of workout should I do? Do I continue this whole body training, or should I switch? How many times should I train a muscle a week? Im asking here because there are a million sites that is about lifting, and I cant get accurate info, and every shithead wants me to buy their workout programs.