Job A: Was working at up until 2 weeks ago (parental leave cover). Good money, nice colleagues, interesting work.
Job B: 3 month contract, with possibility of becoming permanent. No idea what colleagues/work environment etc are like. Is lower paid, work not as interesting - bit of a 'step down' so to speak.
Now, my old boss from Job A asked if I want to go back for 6 weeks. No guarantee of any work after that.
For context: I'm a single parent, really need job security but permanent jobs in my industry are very hard to come by.