Why do you need to type any faster than you currently do?
i am an aspiring software developer and the technique i use to type isn't going to be of any help to that
Typing fast and being a good developer have nothing in common. You can type 20 wpm and produce elegant solutions in a timely manner and you can type 150 wpm and produce crap.
Speed as a developer will come with experience. At this point, you're not part of the workforce as a developer so you're not certain what projects you'll be assigned to. The project is what will dictate the technology stack you'll use. The technology stack is what will help guide you to a particular workflow, e.g., environments, tools, tests, etc. Once you've settled into a workflow, you'll build up speed through experience and confidence.
Each project you work on will likely differ and then you'll have to acclimate yourself to a new set of tools, new languages, new workflows.
At no point in time does typing speed ever come into the equation.
By the way, I've seen developers who can type with their feet, so I wouldn't worry about your typing technique too much.