Hi. So i became an independent fashion consultant sole proprietor this year. I've repeatedly tried to get local tax help but haven't found anyone that's interested. So here I am.

The business I have requires that I use a proprietary billing system that is not that robust for anything other than billing. Early on, I also signed up for quickbooks online and was entering every transaction from the billing system into QBO. In the last few months, i'm doing exponentially more transactions monthly than I was previously and it's become unmanageable to try to do double entries for everything I sell.

Do i need to be doing the double entries or is there an easier way that is acceptable to the IRS? I guess the ultimate goal is to track the amount I see and the cost of the those goods. I like QBO but it's only a reporting tool for me at this point.

Any feedback would be greatly appreciated.

It depends; aslongas your purpose is to simply prepare an income statement for your biz tax return , you do not need double entry system; in reality,
Many small biz owners, to save bookkeeping fees, prepare their own income statements for themselves .however ifyou need to prepare your financial stmt,i.e., balance sheet/income stmt, or cash flow stmt, for your small biz, then, you need double entries. There are advantages to the double-entry accounting method, however, that should be considered. A double-entry system increases accountability -- an important factor if you have investors. The double-entry method also allows you to more easily prepare financial statements. Most accounting software programs (Quicken, Quickbooks, etc.) use the double-entry method.
If you do need to use the double-entry method and are not familiar with accounting, consider hiring an Enrolled Agent/ A CPA doing taxes.
Many a small business has failed due to a lack of proper bookkeeping. One of the most important elements shared by all successful businesses of any size is keeping accurate records, which is also a legal requirement. Besides unnecessary fees such as overdrafts and late charges, a lack of poor records also attracts the attention of the IRS and can be the reason for an audit and other tax consequences.

you also need the double entries to report cash transactions not reported on your biz account