Walk in clinics will be held at doctors' surgeries as part of the States' aim to get everyone a booster before February.
Islanders aged 30 or above can turn up at their GP practice or the vaccination centre at Beau Sejour tomorrow (18 December).
The date of their second coronavirus jab must be on or before 18 September.
The sessions will be held at different times depending on the venue:
- St Martin’s Surgery 8am - 2pm
- Queens Road Surgery 8.30am -1pm
- St Sampson Surgery 9am - 2pm
- Beau Sejour 9.30am - 8pm
States officials are working in conjunction with primary healthcare for the first time to offer Covid-19 vaccinations outside of the vaccination centre.
Doses can only be administered at the practice a patient is registered at.
First and second jabs are also on offer for those who have not yet had them.
Islanders are being asked to wear a mask and take a lateral flow test before attending a walk in session.

Exhibition to celebrate 90 Years of Guernsey's Ambulance Service
Guernsey sewage pipe repairs "unlikely to be a quick"
Guernsey FC to fight for promotion at Victoria Park
Move to return St Julian's House to Guernsey's emergency shelter
Jersey and Guernsey included in UK-Gulf trade deal
St Pier says States put investigation before his experience in P&R seat vote
Industry leaders warn against paying Guernsey's under 18s the same as adults
Hot, hot, hot, Bank Holiday weekend ahead!