General advice for WK that I hadn’t seen mentioned yet in this thread: writing down the new information. I don’t always do this, but when I did, I found it really helped. I wrote down the new kanji, what it meant, and how to say it. New vocab, same thing. Just another way to squeeze it into memory while also getting in some writing practice 
As for pronunciation, two things:
1 - Listen to native speakers. I know they seem like they talk fast, but it will help you get a handle on things over time. Play music or a podcast in the background while you’re doing dishes. Watch some Let’s Plays on YouTube or some dramas. Anything where native speakers are talking, listen to it.
2 - Speak SLOWLY. I get the rush and desire to say the whole sentence native speed, but you’re only going to keep fumbling. Take your time and work through it. Do it enough times at a slow pace, and you’ll start to get used to it and be able to do it faster.
Best of luck!