Tier 2 ICT dependent visa

Hello, I am currently in year 12 doing my A Levels. I am here on a Tier 2 ICT dependent visa with my mom and originally her visa was supposed to expire in 2021 march, which would have been fairly enough for me to finish my A levels because for the extra few months she was going to try and
Extend her visa till aug 2021 so that I could finish my A levels. But due to the COVID 19 pandemic, her company is sending all the employees back to their countries because they arent able to afford the salaries. But I really can not leave my A levels half way because it would completely uproot my studies. I would have wasted all my time and effort i put into A levels so far.
Is there any way I could switch to a Student visa while in the UK and stay here while my mother leaves? So that I fould finish my A levels then go back. Or is there any other way to stay?
Anybody know about this?