Spouse Visa / Any other option??

Hello there

We had given the notice of marriage and it is subjected to 70 days notice which ends on 23rd of November. We have marriage Registration date booked for 25th of November. "Religiously Married in April"

As UK is going through a National Lockdown till early December and I believe we will not be able to register our marriage. My student visa is about to expire on 7th of January 2021.

My wife (British National) is 3 months Pregnant and in this condition it will be really hard for us to live separately as she has no one to take care of.

What options we have in this scenario? Please guide us, we are really worried because of this disastrous situation.