I think the main factors to consider (since as above the process itself is usually straightforward) are a) will your completed work still carry over and b) what the effect on your SFE will be.
For a) this would just be a discussion with your personal tutor/programme leader. If you've completed the modules already they may let you suspend and just come back for term 2 next year? But probably very dependent on programme.
In terms of b) it's because usually if your interrupt/withdraw before the end of the course, SFE will ask you to repay the pro-rata amount of any loans disbursed for the time "left" on the course. E.g. if you interrupt next week after first term ends, usually your first term loan disbursement will be "covered", but if you've had any further disbursement (e.g. if they just paid the whole amount in one lump sum, which I don't think they do normally) they may ask you to make some repayments (but are usually amenable to payment plans). As the additional payments are considered "overpayments" beyond what you've "earned" so far in your time there. That said the masters loans are something I'm less familiar with so format may be different.
The other thing is to consider then what SFE funding you'd be entitled to when you went back. So definitely worth getting in touch with SFE to find out what the situation is and what your options would be. Might also be worth checking with the SU as they may have some experience in this area and be able to advise on what's happened when students have done this previously.
Before you go down that route though, have you seen what support the uni is able to offer through e.g. student hardship funds, any additional bursaries/grants available from your faculty/department? Often there are some discretionary funds available, although depending on the scope of the financial difficulties this may not be feasible. Also worth checking what mental health support they can offer (either now or when you go back after interrupting).