Here is a simple subflow "wrapper" around the vari-timer delay node that allows for intermediate steps.. either seconds or minutes. You set the intervals via a delimited string in the subflow instance properties..
You could also do a similar thing via switch node and some additional logic but this is nice and encapsulated if you need it..
Delay with Intervals Subflow Example
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60 : 1);\nvar currSecs = flow.get(\"currSecs\");\nvar intervals = flow.get(\"intervals\");\nvar ret1;\nvar ret2 = msg;\n\nif (typeof intervals === \"number\") {\n intervals = [intervals];\n}\n\n\nvar nextInterval = intervals.find(element => element > currSecs);\nif (currInterval = intervals.find(element => element == currSecs)) {\n ret1 = { payload: currSecs / (useMins ? 60 : 1) };\n}\n\n//if (intervals.includes(currSecs)) {\n// ret1 = { payload: currSecs / 60 };\n//}\n\nvar nextIntStr; \nif (maxDelay === currSecs) {\n nextIntStr = \" / complete.\";\n} else {\n nextIntStr = ( nextInterval ? \" / Next: \" + new Date(nextInterval * 1000).toISOString().substr(11, 8) :\" / No more intervals\") \n}\n\nvar payLoad = new Date(currSecs * 1000).toISOString().substr(11, 8) + nextIntStr ;\n\nret2.payload = {fill:\"green\",shape:\"dot\",text:payLoad};\n\nreturn [ret1,ret2];\n\n","outputs":2,"noerr":0,"initialize":"","finalize":"","x":1020,"y":360,"wires":[[],[]]},{"id":"4ce3c5a6.88859c","type":"change","z":"85e4d659.1f2e28","name":"","rules":[{"t":"set","p":"delay","pt":"msg","to":"$env(\"USE_MINS\") ? 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