Take the initiative to cancel the patent application and refund the fee.

Yes, you can. What you said is only the application for invention patent, which can be withdrawn, but the application fee already paid will not be refunded to you.

When applying for a new invention patent and utility model patent, if it takes a long time to apply for the last invention patent, you can consider applying in the form of domestic priority to avoid the occurrence of comparative documents that affect your patent authorization during this period.