are these sufficient?

My dr asks me to stop taking duphaston which I have been taking it from the day I’m pregnant as I had 2 history of loss. He also gave prenavit tablet which I realise the calcium is only 200mg, to be taken once a day, which my friend’s is 500mg and she was asked to take twice a day. I also notice the folic acid is only 0.9mg as compared to the usual 5mg I bought from guardians. Are these 2 supplement really suffice and do I really stop duphaston?