Advice on restarting training after Surgery

@Jonnyboy and @Phil_Bilton came across this post and keen to hear how your event was in the Dolomites? What approach did u take to training post surgery?

I have a Grade 3 shoulder separation which does require surgery but has not been impacting my current training and event participation. I have completed SSB1 low volume and now three weeks into SSB2 low volume, with a number of outdoor century rides increasing overall TSS.

My related query to the thread above is whether there is any studies or training science about what training to do leading up to a known break/surgery? I expect like Phil I will be off the trainer for a month and probably off the outdoor bike for an additional month. I can pick the timing for surgery (sometime in the next 6months) and so am trying to work out the best training approach. I am aiming to head to the Dolomites in May 2020 for an 8 day riding experience built around the Giro.

Should I aim to increase intensity and/or TSS significantly prior to surgery or continue on the workout plan as outlined and then work backwards as noted above post surgery, to pick up again?

Welcome any thoughts and views.