1099 Contractor - How to do Self Employed Taxes

Hi, I am a 1099 contractor (therapist) for a group practice. All the information I came across previously about self employed taxes seemed to refer to business owners which much larger amounts of expenses, possible tax deductions, and more expected revenue thus needed to do quarterly filing. As a contractor that does not own my own business do I still have to do quarterly taxes? If so, how do I estimate the income on which to file taxes as it is variable and can't necessarily be estimated? I just started in April 2023 so 2024 would be the first full year so I do not even have previous full years to make an estimate. Additionally, I file jointly with my spouse who is a W2 employee. Does this impact tax filing or the need to file quarterly? In the future I am considering doing multiple 1099 positions for different agencies, how would this impact my tax filing requirements. Thanks!