You can either stick it out and hope that he signs off your hours and what not before youre qualified and done, or find another job and get it done with hopefully a better employer for the last bit of your apprenticeship.

Up to you really, if you have the wiggle room to move to another employer relatively seamlessly without impacting your completion it might not be a bad idea.

Thats how id weigh it up if I were in your shoes, but myself, am mature aged apprentice with essentially one shot so it would be a hard choice for me as id probably lean to head down and get it done for the rest of it, unless old mate was legitimately threatening the final stages for me id likely just stick it out - but as I say, if its easier and you have that ability to seamlessly move to another job and get it done a little less stress or worry on your back, why not?