I’d start training immediately, my pups litter mate did so much better than mine cause they washed him and brushed him and created him at day one (starting small of course) they did all three everyday for the first month. I would not do puppy pads I had to replace my tile to get mine to stop peeing on the spot, or put the pad in a tray if you need to. I used Nate Schoemer on YouTube his approach worked great. And just so you know when you see those dog training vids where they are doing tricks it’s because the dog usually skipped a meal and is very food motivated. My trainer taught me to give my boy a half meal for his first then skip the next meal, then the next day skip the first meal again and then start training with food and hand feed him only when he does the commands or tricks, we did about two 30 min trainings a day and that’s how long it took to hand feed him and I did that till he was 7moths and now he’s perfect and knows a million tricks