Don't read too far ahead of where you are, Lexi. If his bone scan is clear the MDT would probably wait for the MRI to be done before making any recommendations about treatment options. If at that point they are recommending surgery they might suggest hormones if the op is going to be a wee while due to COVID. If he has the option of radiotherapy and / or brachytherapy they will probably wait until you have seen an oncologist before starting anything.
If the bone scan is not clear (which is what I think you are most worried about tonight) then yes, they will suggest that he goes on HT but that is likely to be tablets for a couple of weeks and then start the injections. In that situation, where someone is starting on the injections, the tablets are to stop what is called tumour flare.