March is a LONG time from now given the current state of air travel. Even if you are able to work something out now, the chances are not good that a flight with multiple connections would operate as scheduled. No airline flying from the US has any idea yet what international flight schedules will look like in March. Many airlines are still working on October and November--and even those are subject to last minute changes. Be prepared to go through the rescheduling process many times between now and then and be prepared to change to another destination if your desired flights end up getting cancelled or your passport is no longer welcome to travel to your connecting point or final destination due to the pandemic.

It is really not worth booking partner flights months in advance given the circumstances unless you have a lot of flexibility and time to kill rescheduling everything multiple times.