hi @rishikeshuk492,
Ideally the portal timeline is pretty accurate so you should receive the request for passport email around June (for the temporary Visa stamp)
On receiving PPR email, it will be clearly mentioned to report IRCC if your marital status has changed(which is what I did). So, you should not send your passport and instead contact them and notify about the status change. Now, I am not sure how long will it take to add your spouse since I too am in the middle of this process. But, I will keep updating the thread i created.
No, since you won’t be sending out your passport until the whole process is completed. Once your spouse get added, you will again receive an email asking to send both the passports.
Hope that helps.