The challenge with the information you have given us is that we don't know the economics involved. If you are running advertising or outbound sales, you could be simply buying customers with no ability to recover those costs. Since you are talking about a subscription model, the answer lies in your unit economics.
- What does it cost you to get a customer?
- What is the value of that customer?
Many factors figure into those, and you may not have enough information yet to accurately calculate them. For example, you probably have no idea your churn rate because you don't have enough customers. The business is very sensitive to the real values of these values. And if your long term acquisition number is higher than the customer value, then you are "drawing dead." Remember, you can get as many customers as you like by handing them cash in exchange for placing an order!
For your business to be viable, you need the ability to pay for your fixed costs. Thus, you need to calculate how many customers you need to break even. If that is a large number of customers, your current growth rate is not good enough. You need to get customers faster, get them more cheaply and/or get them to give you more money.
This link may be very helpful: https://www.saastr.com/saas-financial-plan-2-0-from-christoph-janz/ The site saastr.com is an excellent resource for this type of business.