What your neurologist appears to be saying is that a disease modifying drug (DMD) won’t make any difference to your current symptoms. What a DMD aims to do is reduce the number and severity of relapses in the future. Therefore hopefully meaning that you don’t become further disabled by having relapses.
What made you choose Avonex? Or was it chosen for you? The reason I’m asking is that it’s an old drug. A beta interferon with an expected relapse reduction rate of about 30%. It’s given as an intramuscular injection (ie a bigger needle into the muscle) once a week. We now have a drug called Plegridy that’s the same type of beta interferon (interferon 1a), but is a fortnightly subcutaneous injection (ie, a smaller needle going just under the skin). If you want to take beta interferon 1a, Plegridy is an easier injection and being fortnightly, is easier to fit into your life.
Equally, usually people are also offered Tecfidera as a first DMD option. This is a tablet that you take twice a day sandwiched between foods. It has a relapse reduction rate of about 50%, so would seem a better first option.
Clearly, it’s a personal choice, and one that I presume has been made together with your neurologist and/or MS nurse.
Hopefully it will be a good drug for you.