I guess alot depends on the skill you're not doing and how close the next meet season is---and your gym's philosophy. Our compulsory girls compete from Sept to Dec and then from Jan to May, they work new skills for the next level or so. By mid to late May, the coaches will make a decision on who to move up based on new skills mastered, work ethic and attitude. Those that may be missing a couple of skills(still need a spot etc) are usually given another month to work on them and then may move up. I know to move to Level 6, they had to have baby giants, clear hips, BWO and BHS on beam and all the new tumbling for the Level 6 routine. June through August are spent doing alot of strength, cardio and learning the new routines. Girls are not moved up during the actual meet season.