Guys need urgent advice

Hey guys , I am thinking of leaving my job and focus on dsa , algo and lld and hld , where as i am bit confused here should i be leaving my night shift call center job with a saving of 20k to meet my expenses in those months to do this or should i work and get along to study and be interview ready and i am a tech graduate with engg degree from a tier-3 college and after that i hold 1.5 yrs of exp working support job in tcs . Is my decision right or can i have any other alternative as i am planning to study and go all in for 6 months and then crack a product based company. Guys your help and suggestion will be appreciated as I have no one who I can ask the same thing . So please help