Fitness instructor as a free lancer

Team,

I was reading about 44ada and was unable to find all categories of professional who can use ITR 3 for AY 2018-19.

My question : should I use ITR 2 or ITR 3 to report income that I earned from fitness instructor profession, please note I work as free lancer and earnings are from this profession and interest  from fixed deposits and saving account. 

If its ITR 2 than do I need to use section under "Schedule OS"-->Income-->Others  to report all the income ?

If its ITR 3 then I should use 44ada (professional) section to put total income under E3, and 50% of it under E4? 

Thanks in advance!