if you want the experience you're gaining in Singapore (with more exposure then I would suggest you to work in Singapore)

then after 2 to 3 years come back Malaysia then demand a salary that would on par with the Singapore salary after conversion to MYR

see which company you're working for looo, my friend got back from Singapore PWC and his salary in Msia higher than what he earning in Singapore,
but he kena tarik from that company one la, diff people diff case but there's a possibility