I would recommend to do that. In Germany (depending where you are located and the school ) I even could keep my job and just extend the study time to about double the regular time. I didn’t learn a lot of new stuff but I was „forced“ to repeat and relearn a lot I wasn’t using in a long time (math, proofs, low level electronics in my case). Doing that didn’t change a lot regarding my income but helped me to reflect on my daily work. It feels a little bit weird to be one of the oldest in the lecture though.

Edit: Education is pretty much free here, the only thing you’ll have to spend is your time.