No, you are still a single packet = single letter = generally UG school requirements. The rule of thumb of 2 science/1 non science remains
Committee Letter or Letter Packet, where you follow the requirements of the UG institution and it is acceptable by virtually all medical schools
OR
Individual Letters , where you follow the requirements of each individual medical school
The number of letters in a letter packet is immaterial, It is not under the requirements of individual letters
Section 6 of the AMCAS® application: Letters of Evaluation
Letter Types
AMCAS accepts three different types of letters. Each letter type is equivalent to one letter entry.
Committee Letter: A letter authored by a pre-health committee or pre-health advisor and intended to represent your institution’s evaluation of you. A Committee Letter may or may not include additional letters written in support of your application. This is sometimes called a Composite Letter.
Letter Packet: A packet or set of letters assembled and distributed by your institution, often by the institution’s career center. A Letter Packet may include a cover sheet from your pre-health committee or advisor. However, unlike to a Committee Letter, a Letter Packet does not include an evaluative letter from your pre-health committee or advisor.
Individual Letter: A letter written by, and representing, a single letter author. If you have already included an Individual Letter within either a Committee Letter or a Letter Packet, do not add a separate entry for that letter.