Downgrade mySQL 5.6 to 5.5

Hello,

My Server is presently running on mySQL 5.6. Is there a way to safely down grade it to version 5.5/5.4 please?

My present server config is as follows:

Aplication Version

Apache version: Apache/2.2.31
PHP version: 5.6.14 [PHP Switcher]
MySQL version: 5.6.33
FTP version: 1.0.36

Systemplication Version

Apache version: Apache/2.2.31
PHP version: 5.6.14 [PHP Switcher]
MySQL version: 5.6.33
FTP version: 1.0.36

System Info

CPU Model: Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
CPU Details: 2 Core (3200 MHz)
Distro Name: CentOS release 6.8 (Final)
Kernel Version: 2.6.32-642.4.2.el6.x86_64
Platform: x86_64 [kvm]
CPU Model: Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
CPU Details: 2 Core (3200 MHz)
Distro Name: CentOS release 6.8 (Final)
Kernel Version: 2.6.32-642.4.2.el6.x86_64
Platform: x86_64 [kvm]

Please advise.

Regards,,
Tolu