SIMPLELINK-CC2640R2-SDK: How to free up SRAM memory so that my heap size can be more?

Hello,

I'm working on multirole project on stack simplelink_cc2640r2_sdk_1_40_00_45, XDC tools 3.50.4.43 and cc2640r2f custom made sensortag devices.

My heap_size is just 4900 and my available heap mem free total is 1650.

Will my devices work fine without any problem for so much low heap memory available. 

And what are the methods to free up SRAM so that HEAP_SIZE might get increased?

Please advice.

Thanks.