I am on tier 2 general visa and will be eligible for ILR by March 2020. I had entered UK on tier 2 general visa first time on 6 April 2015 ever since i have been working full time being sponsored by (A) rated employers and ensuring that i have not stayed out of UK of more than 180 days.
I am currently working for a big 4 accounting firm within Assurance department (internal audit and regulatory compliance) who have sponsored me tier 2 general visa which is valid till July 2020.
In addition to my main employment i had worked as a casual worker for Adhoc events for a staffing agency & recruitment company starting from December 2018 and till date i have worked only during weekends/festive seasons and completely outside my working hours of main employer. Starting December 2018 till date i have only worked in about 8 or 9 occasions on basis of tier 2 visa sponsored by main employer (big 4 Accounting firm). I had obtained approvals from main employer for working on casual/Adhoc events. Total amount that i have earned as casual worker is a maximum of £500 inclusive of taxes
As casual worker I have been paid through payroll and taxes have been paid to HMRC appropriately. I am quite stressed if this would impact my ILR application. I was not aware about supplementary job conditions as stated in gov.uk and i have immediately stopped all casual work and closed account with staffing & recruitment agency on 11 November 2019. I would be grateful if you can advise if i should highlight this fact in my ILR application about my casual working and whether this could lead to refusal. If not i would be grateful if you can please guide me.

I also have my wife delivering baby in India in February 2020 and she is currently on tier 2 general dependent visa. She intends to reenter UK in March 2020 since her visa is due for renewal by July 2020. So a lot many things depend on my ILR application
Its been most stressful week i have ever faced since knowing the issue.