yes ,absolutely you can start your foundation course on any mode of your interest

and since its ,the lock-down  period you can grab the opprotunity,

you can take foundation courses like ,it depends on the course you want to take after 10 ,example if you are in science your focous should be JEE/IIT .

and if your intrest is like commerce  then you can take foundation  for CA and many other courses.

since this is a computer era ,u will feel really noumber of academia ,where you can pop your foundation

i hope your query got a solution