Metabolic adaptation or water retention?

Hi, I wonder if someone with more dieting experience than myself would be able to offer their opinion here.

I have been dieting now for 7 weeks losing an average of 2lb per week. For the past 2 weeks however this has suddenly ground to a halt. Is this metabolic adaptation or water retention? i.e. Should I drop my calories, or stick and wait this out? Full breakdown below.


Bodyweight at beginning of diet: 176lb.
TDEE estimate: 2,680 cals.
Set calories: 1,930 (750 cal deficit to lose 1.5lb/week)

Daily weight log:

05/03 176.0
06/03 176.0
07/03 174.0
08/03 172.4
09/03
10/03 173.8
11/03 174.2 Wk.1 Average: 174.1 (-1.9lb)
12/03 174.2
13/03 173.6
14/03
15/03
16/03 172.4
17/03 172.6
18/04 172.0 Wk.2 Average: 173.1 (-1.0lb)
19/03 171.0
20/03 170.8
21/03 170.8
22/03 170.4
23/03 170.4
24/03
25/03 170.2 Wk.3 Average: 170.5 (-2.6lb)
26/03 170.2
27/03 168.6
28/03 168.2
29/03 169.0
30/03 168.0
31/03 168.4
01/04 168.8 Wk.4 Average: 168.7 (-1.8lb)
02/04 168.0
03/05 166.6
04/05 166.0
05/05 166.0
06/05 165.6
07/05 164.6
08/05 165.6 Wk.5 Average: 166.0 (-2.7lb)
09/05 166.6
10/05 165.6
11/05 166.6
12/05 165.4
13/05 164.6
14/05 165.6
15/05 165.8 Wk.6 Average: 165.7 (-0.3lb)
16/05 165.8
17/05 166.8
18/05 165.4
19/05 165.4
20/05 165.6
21/05 165.9
22/05 165.6 Wk.7 Average: 165.7 (-0.0lb)

Thanks in advance.

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