D.W.
I would highly suggest that you continue to nurse thru the winter time/flu season as it offers invaluable protection to your little one.
And I agree with SH-it doesn't have to be all or nothing. Formula away from mom, breastmilk while with mom. That's what a lot of moms do that aren't able to pump while they are away from baby. Our bodies are amazing things that will adjust accordingly to babies needs. And think about the nursing relationship you have with your little one. Isn't it nice to be able to come home from work and spend those quiet moments nursing your little one? I treasured the time I spent with my little ones nursing. Just some food for thought.
When you do begin to wean, pump off just enough for comfort only. This will NOT signal your body to make more.
Absolutely DO NOT bind your breasts or wear super tight bras. Supportive bra yes but not super tight. That can lead to plugged ducts or even an abscess. Not what you would be looking for.
Are you asking if it's best to do breastfeeding while teething? Yes, it is. For some babies it is a source of great comfort when they don't understand the pain the are experiencing. Some babies will not nurse as much due to the pain and others are comforted by it.
Before you wean you need to know that baby will take a bottle and that baby can handle formula. As we all know there are babies that have tummies/systems that don't deal well with formula so that's another reason you are better off going gradual rather than cold turkey.