The longer periods between finding new blocks can be caused by a temporary bad pool luck. It does not affect your future mining in any way, but it shows nicely how smooth sail we had in finding new blocks. We are no wizards to see the future.
- Pool found block faster than average → good luck.
- Needed more time → tough luck.
In the long run, the luck is always 100% smoothing out any rough edges. Therefore disconnecting for low luck does not make any sense.