2nd job with Tier 2 - can you split the 20h between two employers?

Hi everyone,

Albanian national with a Skilled worker visa in education. I have a main sponsored job, and the sponsor has allowed a day off during the week to take on additional jobs that could help improve my profile of teaching. Assuming the code of the job is the same as the main job sponsoring me, can I split my limited 20h for a second job on two additional employers? I.e. school A sponsors, and do 2h with school B and 4h with school C? Or do any hours be limited to one second singular employer?

Thanks in advance!