I would buy some cheap second hand yamaha keyboard and set it up on a table. Something like this:
RockJam RJ761 61 Key Keyboard Piano with Keyboard Bench, Digital Piano Stool, Sustain Pedal and Headphones amzn.eu/d/6uVi2Yu
They go a bit cheaper than that too. But anything with over around 66 keys would work.
See how that feels first. If you get into it and enjoy it then move over to the piano you have or spend more money on a proper electronic piano that you can use with headphones.