Hello Airtable Community!
I am trying to build something and I am STUMPED. Hoping someone can help! 
CONTEXT: I run a coaching business that services multiple clients. I am trying to build a tracker that tracks the number of coaching sessions that are booked each month.
I would like to track (1) total number of monthly sessions across all clients and (2) the total number monthly sessions for each client. 
Clients can book up to 3 sessions.
Currently, I am only doing (1) total number of monthly sessions across all clients. I have a table that records each booked session and links it to the month that it was booked in. The linked record then uses a count field to sum up the number of Session #1s, Session #2s, and Session #3s. Lastly, I use a formula field to sum up the total number of All Sessions (#1 + #2 + #3) to get a total of sessions booked for each month.
THE PROBLEM: Currently, since each record is linked separately by session number, I am not able to easily use a Roll-up Field to count the number of each session per client within each linked record. 
See below (sensitive info is masked... you may need to zoom in 🔎!). I have -
1. A linked record for each session 
2. A count of the number of sessions for that month 
3. A total for all sessions that month 

QUESTION: I am wondering if it is possible to combine multiple linked records (in this case 3) into one field (keeping the records linked) titled "All Sessions".
That way, I can pull out the number of All Sessions per month per client by using a Roll-up Field to count the number of sessions per client (client are represented as different colors on the far right of the above screen grab). 
So ideally, the fields would be: 
Session #1 (linked record)  | Session #2 (linked record)  | Session #3(linked record)  | All Sessions (first 3 fields combined into one linked record field)  | Count of all Sessions (total sessions per month)  | Count of Sessions per month for Black Client (Roll-up)  | Count of Sessions per month for Green Client (Roll-up)  | Count of Sessions per month for Purple Client (Roll-up)  | Count of Sessions per month for Yellow Client (Roll-up)  | Count of Sessions per month for Blue Client (Roll-up)  | Count of Sessions per month for Red Client (Roll-up)  | 
Is it possible to combine multiple linked records into one field that contains all linked values? Totally stumped and open to any recommendations!

