If you're in Amsterdam, why not talk to a school at Hilversum or Lelystad? I'm not familiar with the differences in theory and medical in Belgium to know why that would be beneficial, but if you want to go for a PPL, it takes time and effort, no matter where you train. You can alleviate the situation by making sure that you've got a school within an hour's drive of where you live, instead of a couple of hours away, so that the burden of travelling there will be less.