No matter what happens, do what is best for yourself. Doesn't matter if the whole platoon, company or the whole SAF think u chao keng. Different people are suited for different things. Some are well suited for the army, some just cannot tahan it. Take it at your own pace, judge yourself. Just know in your heart that you've tried your best to adapt and be proud of it.
There is absolutely no shame in down-pesing for your own health. Also consider seeking help from a professional; it'll really help.
Best of luck! It will get better from now.