Hi LYN sifus, I'm new to stocks and I'm not a risk taker... yet.

I'm investing primarily for dividends. My current stocks are
Maybank
RHBBANK
MBSB

I am planning to sell these stocks during Ex Date, because I see in historical charts, the prices drop a lot. I'm still eligible for the dividends right if I sell on Ex Date or is there a detail I missed (eg: cut off time)?

I then plan to buy the same stocks again, hopefully at lower price, then wait for the next Ex Date and then sell again.

I know this is slow and not exciting for most sifus here, but please advise if there is any advice on my simple strategy here.. Thank you