From now until 4-6 weeks before wrestling starts I would focus on general training: speed, strength, power, flexibility, mobility, reaction, and endurance as well as working to improve anything that is holding you back. I would go and ask your wrestling and track coaches what you need to improve to get better or what you are lacking and focus on that. I would also look for articles and Q&As by Buddy “Coach X” Morris, James “The Thinker” Smith, Joe Defranco, Charlie Francis, and Dan Pfaff on their methods and weekly training templates to bring up general fitness.
4-6 weeks before wrestling starts I would shift my focus to wrestling specific training while maintaining the general abilities you just developed. You should be better all around as you enter your wrestling season.
During wrestling season you have all your time accounted for so you don’t have to worry about what to do…
After wrestling season I would set up a 4-5 week program to get ready for track.
Week 1-active rest, very light weight training, tempo runs, ab training, med ball throws
Week 2-Light weights, sprint form drills (A skips, B skips, etc)tempo runs, ab training, med ball throws, hops, hill sprints (30m)
Week 3-medium weights, tempo runs, ab training, form drills, med ball throws, hops, hill sprints
Week 4-medium weights, tempo runs, abs, form drills, hills, hops, MB Throws, 10m accels
Week 5-medium weights, tempo runs, abs, form drills, 20m accels, MB Throws, hills, hops
If you only have 4 weeks than drop week 2 out of this cycle. This should lead nicely into your track season where you will build up your speed throughout the season and hit personal bests by the end of the season.
Good Luck!