@thawk32, could you share more info?

--- Where is the tumor?
--- What type of tumor is it?
--- Has this plan been created bc there is arterial involvement, meaning that the surgeon wants to try to shrink the tumor before attempting surgery? (It sounds as though the surgeon thinks, for some reason, that the tumor is not resectable at this time, but ****I'm not a scientist or doctor, so please don't take my assumption as a reliable one.****)

Bottom line: Each case is unique, and the likelihood of someone on this board having had the same experience is slim. I think you need more info from your surgeon and your onc. Please know that I'm not discouraging you from seeking info here; I'm just urging you to get the info you need from the people who know the most: your care team. Good luck.

PS: Again, note that I'm not particularly knowledgeable, but "Let's wait three months and see whether it has spread" alarms me. A lot of cancerous growth can occur within three months.

Is your surgeon saying that you need a mandatory rest period of three months after radiation+oral chemo to ensure that you're strong enough to endure surgery?

Or, is there some other reason for that gap? Why wouldn't your surgeon be able to determine, with bloodwork and imaging very shortly after completion of radiation + oral chemo, whether you're a candidate for surgery? I'm not trying to alarm you -- I'm asking questions that I think your team needs to answer. YOU need to be 100% clear about why they're doing what they're doing -- that's your right as a patient.