Medium Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 34; Flight Crew Total 6638; Flight Crew Type 770
Time Pressure; Situational Awareness; Distraction; Communication Breakdown; Workload
Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Taxiway
Air Traffic Control Provided Assistance; Flight Crew FLC complied w / Automation / Advisory
Environment - Non Weather Related; Human Factors
This was my first flight in a jet in 5 months due to COVID.  We were doing 6 full stop landings at ZZZ.  After landing number 3 (I think) while still on the runway we were told by tower to contact Ground.  I didn't want to call Ground while on the runway; so I opted to work on setting up the plane for the next takeoff.The FMS has to be re-programmed from scratch after each landing which is a lot of work.  I was busy doing that and we taxied for 1/4 mile without calling Ground.  Tower reached out to us and asked our intentions.I was in a rush to get the FMS and plane reset for the next takeoff and forgot to call Ground.  I've never done multiple landings in this plane so this was a non-normal operation for me.Next time I should not distract myself from contacting ground by doing other work.
Air carrier First Officer reported not calling Ground Control after clearing the runway.