User research – Ethnography done alone and with stakeholders.

What is the best way to conduct ethnographic research alone or with interested parties, without the support of another professional trained to capture the greatest amount and quality of information without distracting me so much from multitasking?

In the coming weeks, I will conduct contextual consultations and shadowing / accompaniment sessions in 2-hour sessions alone, and possibly with interested parties also part of the time. The ideal would be to have another practitioner by my side, but since that is not the case, what approaches or techniques can I consider to make things more manageable?

Does anyone know of brief and effective instructions or guidelines on the basics to rapidly increase these stakeholders to participate in supporting ethnographic research?

Any suggestions or resources would be greatly appreciated.