Dammit, I played Right/Left back for my school for the past 5 years, really wish I could help you but too bad you were asking for central midfielders only...but I'll give you my ideas if you don't mind.
Since your formation is 4-3-3, you're a central midfielder, and you have 3 strikers up front, you should definitely have good vision. I think awareness and vision both connect; if you have good vision, you obviously have good awareness of who you'll be passing the ball to. Also, if the games aren't that competitive, then I wouldn't bother training for stamina. However, midfielders have to run back and forth all the time throughout the match, so you're probably gonna have to have the most stamina in your team if you're playing midfield for the whole of the season.
I remember running around the field every week during our training sessions, because I lacked stamina as well, but my aggressive style of football has helped me make big contributions for my team, so it was fine.
The new football season in my school is about to start and I want to practice and get ready for it.
The position I play is central attacking midfielder. I was wondering how many miles I should run every day to have good stamina for the matches cuz i dont have the best stamina. The matches are 60 minutes long and I guess it's a little competitive and there are high-tempo matches. How many miles would you expect to run in a 60 minute match.
Btw, the formation of our team is 4-3-3
Also what attributes should I work on.
Passing
Vision
Shooting
Awareness
etc...
If you guys yourselves play/played football, and were central midfielders, what were the essential necessities of being one. Thx.