you have my full sympathy.
I have back issues too. My periods of non-riding have been winter (but I'm an all year rider) so in some ways it's not so bad. I haven't had a full blown op - though wish I had some days - but had a steroid injection at the start of January. That for me was a miracle. 8 day later I was riding again. Now I take it steady, wear a back support when riding and don't do too far without taking a break and stretching.
As the others have said, take as long as the docs say, don't rush. Your bike will wait, you only have one back.
Gina
03 America - Pretty stock - except the TBS wheel...

06 America - missing, presumed in bits. With it's TBS wheel...

09 America - It's very blue....