We realise that you may be unaware of the (very limited) options available locally.

To try to help, here are a few ideas to help you.

Streetlink The best route is to refer yourself via Streetlink They will come out, find you and offer assistance. That may be, for example connecting you into services like the Lantern Trust in Weymouth:

In Poole/Bournemouth there is much more potential for support; this link has local services there at this link

In Swanage there is the Welcome Lounge on Old High Street where there are people who can signpost you to services and support. It is worth contacting them as they can put you in contact with the Dorset County Homelessness Team: