You're better off to scrimp & save while working. Get a job, any job, for a year or so. The more the pay the better of course, but take whatever you can get. Use the time to study the theory so you're not wasting the time with regards to your eventual qualifications. Work for a while, do the next phase, work again, do another phase and so on.
Don't try to learn to fly part time ie a lesson or two per week. At least, not in the beginning. You'll waste quite a bit of time (=$$$). Newly learned skills deteriorate quickly between lessons. You'll have to spend time at the start of each lesson regaining the skill level you had at the end of the previous week's lesson. Instead use the time to save enough money to start your training full time. Get up to at least 1st solo or, better, starting the navigation phase and then you could continue at something less than full time if you wish. Go back to full time for the instrument rating though. Doing an instrument rating has similarities to when you initially learnt to fly. Lots of new skills that deteriorate quickly if the lessons are too far apart.
Also, during the working-between-stages periods, don't bother flying 'to stay current' or 'maintain skills'. You're going to be rusty when you start each phase anyway. It'll take a couple of hours during the starting lessons to get back into it but that's still cheaper than flying an hour a week or month while trying save for the next training phase. By all means go for a flight if you really want to and enjoy it, but don't feel pressured to fly just to try to keep your skill level. An hour here or there won't do much for your skill but will cost money that could be used later.
I should mention that if cost sharing is legal where you are then getting friends & family together for joy flights or trips away is a good way to build flight time at a much reduced rate. Everyone on board pays their share of the aircraft rental cost so your cost is proportionally less.