Is it worth to join a competitive will it actually improve my solo q ranking currently Plat 5

was wondering to join a competitive team they are mostly plat rank, i would be playing mid lane. the practice would be atlest 3 days of the week, one day on sat and rest on monday-friday. 2-3 hours, is it worth because from monday to friday i have only about 5 hours to play lol to climb, and sat and sun i have 8 hours atlest, like is the sacrifice worth it the hours i would have spent on solo q some of those hours would be taken and put into team play and practice, we currently dont have a coach, for me its all about efficiency of climbing because unfortunately i dont have 8+hours every day to climb