Norethisterone will not solve adhesions being stucktogether - in other words it will not unstick them.
but any surgery causes scar tissue and adhesions - so another surgery to get in there and cut the adhesions while it is a temporary fix may not last long - will encourage the growth of yet more adhesions and you could be back to square one in a short space of time with various organs sticking together with the superglue like adhesions.
You need not have endo at all. But if you do norethisterone will prevent you having periods so often which will help to reduce the likelyhood of endometrium cells from the womb travelling along the fallopian tubes and resettling to grow elsewhere inside the tummy cavity.
Endo wounds can grow scarring and adhesions and once they start growing then just keep on growing.
There's no point having any surgery to cut them back unless you need that surgery for something more important. Keep the number of ops to a minimum as each encourages more scarring every time.
When you are ready for the next pregnancy - then that is the time to have a pre-pregnancy op to cut back all the adhesions and free up stuck together organs. not only will that help your chances of getting pregnant - it will also make the pregnancy itself a lot less painful as the baby grows and the body organs need to move out of the way, this is much easier and less painful if there are fewer adhesions holding everything together with superglue strength sticky strands.
You have to think of the two things as separate. Endo is one condition - and it can lead to adhesions which is a separate condition. Adhesions can be caused by any trauma to the tummy - not just endo, but even bashing the tummy against something - or even a child jumping up and landing on your tummy could trigger adhesions to develop. they are the body's natural reaction to being injured a cushion of protection against future injury. you cannot stop them growing - but your can get them cut right back, and cut through which releases bowel and uterus, or bladder and uterus, or ovaries from sticking anywhere they wish to get stuck. Normally all the organs in the tummy are free to flop about and move as an when needed, but adhesions can start for any number of reasons and continue to develop and grow and stick everything together with everything else.causing what is known as a frozen pelvis.
Your doc has given you great advice there. hold back on un-necessary surgery till it becomes necessary. and Meantime on the off chance you do have endo - stop the ovulating and having periods with norethisterone to reduce the chances of future endo spreading and possibly compromising your fertility.