Assalamo alaykom ya Meehy
look, in my opinion your problem can be divided into three parts mainly:
1- How to design the telescopic-cascode OTA (assuming you know what is an OTA as well as telescopic cascoding already).
2- How to design the CMFB amplifier.
3- How to connect the CMFB amplifier to bias certain gate of one of the MOSFETs used in your OTA to achieve certain CM level at the output without oscillation (which may need some sort of compansation as you will have too many poles that can make the circuit easily oscillate they said : "bad amplifier is a good oscillator).
I suggest you to follow suitable steps to finally fullfill these results or solve these three problems.
I may setup a sample circuit (without numirical values) to show you OTA and CMFB connected together.
Best Regards
Ahmad,
Added after 1 hours 5 minutes:
Here is a sample circuit you can use to start ..