You should do your touch typing lessons as often as you are capable of without hurting your fingers! As with everything else, regular training gives the best result. Most people will probably get the best result by distributing the lessons to several days in the week rather the doing a lot of exercises in one day. It is a good idea to put your touch type training into a calendar to be sure to remember to do them. If you don't have a calendar you can use the Google calendar which is free and easy to use. In this way it is easier to remember to do your exercises.
Luckily, institutions like the Flatiron School and The Grace Hopper Program offer scholarships or deferred tuition to make these bootcamps more affordable for under-represented groups like minorities and women in tech. Check out Course Report for a comprehensive breakdown of the many online and in-person bootcamps—including detailed reviews from their alums, which can help you decide whether a bootcamp is going to help you achieve your programming dreams.
Based out of New Zealand, Code Avengers provides fun and interactive programming lessons for kids 5 to 14; for schoolteachers wanting to teach coding; for people going into coding professionally; and for creators ages 15 and up. Also offered are one- to three-day "code camps" for students up to 17. These day camps are located in multiple states -- and foreign countries.